Like many other fishes,bluehead wrasses utilize harem mating as they reproduce sexually.However,unlike most fishes,

A)they are simultaneous hermaphrodites.
B)they function without any signalling by steroid hormones.
C)they undergo a prolonged diapause during low tide.
D)their offspring can be either haploid or diploid.
E)large females morph into reproductively competent males.