Johnny Is a 10 Year Old Boy Who Has Problems

Johnny is a 10 year old boy who has problems interacting and relating to others.In fact,Johnny doesn't respond to others the way you would expect and seems to have difficulty interpreting others' body language.He also gets very upset if his routine is disrupted.Johnny's behaviour is most consistent with which disorder?

A) attention-deficit/hyperactivity disorder
B) autistic disorder
C) oppositional defiant disorder
D) conduct disorder