Which of the Following Statements About Research on the Etiology

Which of the following statements about research on the etiology of panic disorder is false?

A) Panic disorder is associated with neurotransmitters such as norepinephrine and GABA.
B) Theories of the origins of panic attack take into account biological, psychological, and sociocultural factors.
C) Lactate, which plays a role in brain metabolism, has been found to be elevated in individuals with panic disorder.
D) American men are twice as likely as American women to be diagnosed with panic disorder.