While Patients with Panic Disorder and Patients with Illness Anxiety

While patients with panic disorder and patients with illness anxiety disorder both tend to misinterpret bodily sensations, how do the two kinds of patients differ?

A) Those with panic disorder have imagined physical sensations, while those with illness anxiety disorder experience real physical sensations.
B) Those with panic disorder tend to fear immediate catastrophe, while those with illness anxiety disorder tend to fear long-term illness.
C) Those with panic disorder tend to ignore the symptoms of their first attacks, while those with illness anxiety disorder tend to seek immediate medical treatment following the first indication of pain.
D) Those with panic disorder have real physical sensations, while those with illness anxiety disorder experience sensations that are "all in their minds."