With Regard to Panic and Panic Disorder,it Is Generally Accepted

With regard to panic and panic disorder,it is generally accepted that

A) unexpected panic attacks are not uncommon in the population.
B) unexpected panic attacks are quite rare in the population; the majority of those who experience them are eventually diagnosed with panic disorder,provided they meet additional criteria.
C) the frequency of panic attacks is normally distributed in the population; those with frequency in the upper 5% are diagnosed with panic disorder.
D) the intensity of panic attacks is normally distributed in the population; those with intensity in the upper 5th percentile are diagnosed with panic disorder.
E) panic attacks only occur in persons with panic disorder.