Any eligible employee shall have the right to elect upon a form furnished by and upon completion to be filed with the retirement system manager, without right of revocation, except as provided in this section, and within ninety (90) days after the effective date of transfer to the county, whether to allow the accumulated contributions with which he or she is entitled upon such date to be credited under the city system, to remain in the retirement fund. Each person who so elects shall continue to be a member of the city system under the provisions of this article. Failure to make such election within such ninety (90) days or an election not to allow such contributions to so remain shall be deemed an irrevocable election to withdraw his or her accumulated contributions and such contributions shall be refunded to such eligible employee and his or her membership in this system shall be terminated forthwith. (Prior code § 34.07.701)