When People with ADD or ADHD Participate in a Stop

When people with ADD or ADHD participate in a Stop Signal Task, pressing a button in response to a circle unless a beep sounds immediately,

A) they do as well as people without ADD or ADHD, because they only have to pay attention for a short period of time.
B) they do as well as people without ADD or ADHD, because this task is unrelated to the brain mechanisms affected by ADD or ADHD.
C) they do worse than people without ADD or ADHD, because they have trouble inhibiting their responses.
D) they do worse than people without ADD or ADHD, because males don't do well on the Stop Signal Task and most people diagnosed with ADD or ADHD are male.