Which Statement About Attention-Deficit Hyperactivity Disorder (ADHD) Is True

Multiple Choice

Which statement about attention-deficit hyperactivity disorder (ADHD) is true?

A) All children with ADHD are hyperactive.
B) Fraternal twins are more likely than identical twins to share ADHD.
C) Boys are diagnosed with ADHD two to three times as often as girls.
D) For a child to be diagnosed with ADHD, symptoms must appear before age 5.