Research Has Shown That, in Predicting the Behavior of Other

Research has shown that, in predicting the behavior of other people, we are

A) more accurate in predicting their observable behavior than our own observable behavior.
B) more accurate in predicting an acquaintance's behavior than a close friend's behavior.
C) less accurate in predicting their observable behavior than our own observable behavior.
D) equally able to predict a close friend's and an acquaintance's observable behavior.