A Counterintuitive Aspect of Attention-Deficit/hyperactivity Disorder Is That

A counterintuitive aspect of attention-deficit/hyperactivity disorder is that:

A) although people think that the brains of children with this disorder are overactive,they are actually underactive.
B) treating this disorder too early in childhood is associated with greater impairment from the disorder during young adulthood.
C) children with this disorder benefit from antipsychotic medication,even though they show no signs of psychosis.
D) most children with this disorder show only symptoms of hyperactivity,or only symptoms of attention-deficit,but not symptoms of both.