Which of the following statements about those who suffer from bipolar disorder is TRUE?
A)Sufferers of bipolar disorder may undergo periods of compulsive behavior with little regard to consequences.
B)Manic episodes of those with bipolar disorder do not impair normal life functions.
C)Those with bipolar disorder are often able to avoid substance abuse because of their own unnatural levels of energy.
D)While often manic,sufferers of bipolar disorder rarely feel irritable or unhappy.