Joan,an Autistic Child,reacts to Her Mother's Expression of Pain by Withdrawing

Joan,an autistic child,reacts to her mother's expression of pain by withdrawing from her.This reaction

A) is atypical of autistic children.
B) is Joan's way of expressing sympathy.
C) supports the idea that Joan lacks theory of mind.
D) is indicative of a more serious disturbance underlying Joan's autism,such as childhood disintegrative disorder.