A Biological Basis for Panic Disorder Is Suggested by the Finding

A biological basis for panic disorder is suggested by the finding that

A) identical and fraternal twins are equally likely to develop panic disorder.
B) panic disorder responds well to family psychotherapy.
C) persons who develop panic disorder after lactic acid injections are more likely to have biological relatives with a history of anxiety disorder.
D) haloperidol is an effective antidote for anxiety.
E) panic disorder can be precipitated by the use of alcohol and cocaine.