During a Unit Meeting,you Notice That Vivian Listens Attentively When

During a unit meeting,you notice that Vivian listens attentively when Mary is speaking and offers support and advice when Mary presents ideas to the group.You are surprised because Vivian has often confided that she does not like Mary.Vivian's behavior is best described as:

A) Insincere.
B) Networking.
C) Politically sophisticated.
D) Collegial.