The Most Consistent Abnormality Noted in Attention-Deficit/hyperactivity Disorder Brains Is

The most consistent abnormality noted in attention-deficit/hyperactivity disorder brains is

A) a loss of myelin in cells within the spinal cord.
B) a decreased number of cells within the basal ganglia.
C) an increase in the number of cells within the corpus callosum.
D) reduced activation of the medial prefrontal cortex.
E) a 5% increase in total brain volume.