While at Home,Joshua Runs Through the House Chasing the Cat,even

While at home,Joshua runs through the house chasing the cat,even though he has been told many times not to do so.At school,he often needs instructions repeated and rules explained over and over.Joshua also misses social cues and doesn't seem to understand other children very well.Joshua might qualify for a diagnosis of

A) oppositional-defiant disorder.
B) high-functioning autism (Asperger's syndrome) .
C) dissociative identity disorder.
D) attention-deficit/hyperactivity disorder.