When a Grandfather Smiles at His Young Granddaughter, She Responds

When a grandfather smiles at his young granddaughter, she responds by moving toward him. If he looks angry, she is likely to ________, suggesting that ________.

A) also move toward him; she does not know the difference between these expressions
B) also move toward him; her behavior is unaffected by emotional expressions
C) move away; she can recognize and understand the meaning of these expressions
D) move away; her behavior is unaffected by emotional expressions