(a) In this title the following words have the meanings indicated.
(b) “Selection A (Additional member contributions)” means the retirement selection described in § 22-219 of this title.
(c) “Selection B (Limited cost-of-living adjustment)” means the retirement selection described in § 22-220 of this title.
(d) “Selection C (Combination formula)” means the retirement selection described in § 22-221 of this title.