What Has McGill Researcher and Professor Emeritus Virginia Douglas Found

What has McGill researcher and professor emeritus Virginia Douglas found about the arousal levels of children with ADHD?

A) Children with ADHD, compared to normal children, are overaroused by almost every task they encounter.
B) Children with ADHD are overaroused by stimulating tasks and underaroused by boring tasks.
C) Children with ADHD are underaroused by stimulating tasks and overaroused by everyday mundane tasks that capture their attention.
D) Only children with primarily attentional difficulties experience differential arousal as compared with normal children.