The role model of affiliative behavior, females of the monogamous species

In the role model of affiliative behavior, females of the monogamous species (CAN SELECT MULTIPLE)

A.have more oxytocin receptors in the nucleus accumbens (NAcc) than do the polygamous voles.
B.do not form a partner preference when oxytocin receptor antagonist is delivered to the NAcc.
C.will speed up partner preference formation if oxytocin receptor antagonist is delivered to the NAcc.