In Comparative Studies of True Smiles (With Emotion of Happiness)

Multiple Choice

In comparative studies of true smiles (with emotion of happiness) and lie smiles (without emotion of happiness) , it was found that:

A) there was no difference between the two
B) children are better at producing lie smiles than adults
C) the main difference was in the use of facial muscles around the eyes
D) the main difference was in the use of facial muscles around the mouth