A 7-Year-Old Boy with Right-Sided Otitis Media Was Treated with Antibiotics

A 7-year-old boy with right-sided otitis media was treated with antibiotics. The organisms did not respond to the treatment, and the infection spread to the mastoid antrum and the mastoid air cells. The surgeon decided to perform a radical mastoid operation. After the operation, it was noticed that the boy's face was distorted.
-The following signs and symptoms suggest that the right facial nerve had been damaged during the operation except which?

A) The mouth was drawn upward to the right.
B) He was unable to close his right eye.
C) Saliva tended to accumulate in his right cheek.
D) The saliva tended to dribble from the corner of his mouth.
E) All the muscles of the right side of his face were paralyzed.