In One Epigenetic Study, Mice Experienced a Stressful Environment as Newborns

In one epigenetic study, mice experienced a stressful environment as newborns when they were separated from their mothers. What happened to these mice?

A) The mice were no different from mice that were not in stressful situations.
B) The mice became socially anxious, as did their offspring.
C) The mice interacted frequently with other mice.
D) The mice became very aggressive.