e. Mandatory retirement. A member subject to the provisions of this section shall be retired on December thirty-first of the year in which he or she attains sixty years of age.
Notwithstanding the foregoing, any member in service in the division on August fifteenth, two thousand seven, and who on that date was entitled to receive retirement benefits on the thirty-first day of December in the year in which he or she attained fifty-seven years of age as provided in paragraph three of subdivision b of this section, may elect to retain such entitlement, provided the member remains in service on the thirtieth day of December in the year in which he or she attains fifty-seven years of age. The provisions of this subdivision shall not apply to the superintendent.