单项选择题

What feature of “body language”mentioned in the passage is common to both humans and animals?
A.Lifting beads when sad.
B.Keeping long faces when angry.
C.Bristling hair when ready to attack.
D.Bowing heads when willing to obey.

A.Lifting
B.
B.Keeping
C.
C.Bristling
D.
D.Bowing
E.