This section does not apply to the State Police Retirement System. Except as provided in subsection (c) of this section, an accidental disability retirement allowance equals the lesser of: the member’s average final compensation; or the sum of: an annuity that is the actuarial equivalent of the member’s accumulated contributions at retirement; and a pension equal to two–thirds of the member’s average final compensation. This subsection applies to a member of a State system other than the Law Enforcement Officers’ Pension System who is at least normal retirement age. An accidental disability retirement allowance equals the greater of: a normal service retirement allowance; or an accidental disability retirement allowance computed in accordance with subsection (b) of this section. This subsection applies only to a member of the Employees’ Pension System who: is promoted within the Department of Corrections to a position that no longer is eligible for membership in the Correctional Officers’ Retirement System as provided in § 25–201 of this article; elects not to transfer the years of creditable service the individual accrued in the Correctional Officers’ Retirement System to the Employees’ Pension System; and is eligible to receive a vested allowance from the Correctional Officers’ Retirement System. A member may receive an accidental disability retirement allowance under this section if the member: does not elect to receive a vested allowance from the Correctional Officers’ Retirement System; and transfers the member’s accumulated contributions in the Correctional Officers’ Retirement System to the Employees’ Pension System.