Autism Spectrum Disorder Was First Described Independently by Hans Asperger

Autism Spectrum Disorder was first described independently by Hans Asperger and Leo Kanner. Which of the following statements best summarizes the main difference between Asperger's description and Kanner's description of the disorder?

A) The children Asperger described had few impairments in language, whereas the children Kanner described had severe language impairment.
B) The children Asperger described has significantly lower intelligence scores than the children Kanner described
C) Asperger attributed Autism Spectrum Disorder to cold, distant parenting behavior, whereas Kanner attributed the disorder to brain structure and functioning.
D) Asperger believed that the disorder was caused by deficits in the "social brain," especially the right fusiform gyrus, whereas Kanner believed the disorder was caused by both genetic and environmental factors.