Alice Has Lost Sensitivity to Pain Only on the Left

Multiple Choice

Alice has lost sensitivity to pain only on the left side of her face.Why is it reasonable to suspect that Alice suffers from conversion disorder?

A) Conversion disorder often involves loss of sensitivity to pain.
B) Conversion disorder does not usually involve bilateral symptoms.
C) There is no possible organic explanation for why someone would lose pain sensation in the face.
D) The nerves involved in pain sensation do not divide the face neatly in half.