In His Animal Study of Sexual Arousal, Pfaus and His

In his animal study of sexual arousal, Pfaus and his associates were able to demonstrate the link between objects in the environment and sexual receptivity in humans. In his research, he used

A) human subjects who had a variety of fetishes.
B) male rats wearing jackets before they mated.
C) dogs that had white fur compared to dogs that had dark fur.
D) long-haired cats compared to short-haired cats.