Cruickshank's Work Was Important for All of the Following Reasons

Multiple Choice

Cruickshank's work was important for all of the following reasons EXCEPT

A) The children he studied had cerebral palsy, definitely caused by brain damage.
B) Most of the children had average intelligence.
C) He was among the first to have an educational program for children with characteristics of what is now called ADHD.
D) He showed that hyperactivity could exist concomitantly with mental retardation.