1. His accumulated contributions, to be paid in a lump sum, to his widow, or, in the event there is no widow, to his child or children or, in the event there is no widow or child or children, to the beneficiary whom he nominates by written designation duly executed and filed with the retirement board, and in addition thereto;

2. An amount equal to his compensation earnable during the six months immediately preceding his death to be paid in a lump sum to his widow or, in the event there is no widow to his child or children or, in the event there is no widow or child or children to his parent or parents whom the retirement board determines, to have been dependent, in whole or in part, upon such member; and, if the retirement board determines such death to be the result of injury or illness incurred while in the performance of duty, in addition thereto;

3. An amount sufficient, when added to the amount provided in subdivision 1 of this subsection to provide an allowance equal to one-half of the member’s final compensation, payable as provided in Section 2.92.050. If payment of the allowance is terminated because of the marriage of the widow or attainment of the age of eighteen years by a child, before the total of the monthly payments made equals the sum of the amounts provided in subdivisions 1 and 2 of the subsection, then an amount equal to the difference between the total and the sum shall be paid in one amount to the married widow, or if there is no such widow, to the child or children of the deceased member. If the retirement board determines that death is not the result of injury or illness incurred in the performance of duty, and if the member is qualified for retirement from service under Section 2.92.240, then, in addition to the amounts provided in subdivisions 1 and 2 of this subsection;

4. An amount sufficient when added to the amount provided in subdivisions 1 and 2 of this subsection, when applied according to rates and tables actuarially recommended and approved by the retirement board, to provide an allowance to be paid to the widow to whom the member was married at least one year prior to his death to be equal in amount to the allowance calculated as in Section 2.92.240, which would have been payable to her if the member had retired for disability at the time of his death and had died instantly thereafter, and to continue throughout her life or until her remarriage. If there is no such widow or if she dies before all surviving children of such deceased member have attained the age of eighteen years, then to his child or children until such child or children has attained the age of eighteen years. If payment of the allowance is terminated because of marriage of the widow or attainment of the age of eighteen years by such child or children before the total of the monthly payments made equals the sum or the amounts provided in subdivisions 1 and 2 of this subsection, than an amount equal to the difference between the total and the sum shall be paid in one amount to the married widow, or if there is no such widow, to the child or children of the deceased member;

5. A member or a beneficiary after the death of a member may, by written election duly executed and filed with the retirement board, have the death benefit, provided to be paid in a lump sum in this section, paid in monthly or annual installments subject to such rules and regulations as the board may adopt.