Li Yan tried on three jackets. The first one was black with

A．To make the point that animal emotions are worth our attention.
B．To explain what reflexive behaviors are.
C．To compare human emotions with animal emotions.
D．To discuss the importance of emotions.

A．emotions do not exist.
B．emotions contribute to survival.
C．emotions serve no other purpose than giving meaning and depth to life.
D．only humans are capable of emotions.