Cooperative Breeding or 'Allocare' Is

Cooperative breeding or 'allocare' is:

A) a reproductive strategy in which mothers are assisted by others (both sexes) who help care for and feed the young.
B) a reproductive strategy in which mothers are assisted by their babies' fathers, who help care for and feed the young.
C) a pattern of promiscuity practiced by our Neanderthal cousins.
D) seen in non-human primates but not among humans.
E) a strategy in which high status females command less powerful females to breed so that they don't have to.