Kanner's Research with a Group of Children He Called "Autistic

Kanner's research with a group of children he called "autistic" indicated that these children could be set apart from children with schizophrenia in each of the following ways EXCEPT

A) Children with schizophrenia withdrew from the world at some point, while children with autism had no social connections to begin with.
B) Children with autism exhibited unique language patterns, such as echolalia.
C) Children with schizophrenia exhibited bizarre, repetitive physical movement.
D) Children with schizophrenia tended to deteriorate in their functioning over time, while children with autism did not.