36. According to Hamilton’s rule, kin selection causes genes to increase when C ＜ Br, where C is the reproductive cost to theindividual performing the act, B is the additional reproductive benefit gained by the recipient of the altruistic act, and r isthe ____________.
(A) genetic relatedness of the recipient to the actor
(B) frequency of the altruistic allele
(C) inbreeding coefficient
(D) rate of recombination
(E) return on investment