This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Psychiatry
One of the following usually differentiates hysterical symptoms from hypochondriacal symptoms - 
Select and explain. 
A. Symptoms do not normally reflect understandable physiological or pathological mechanism, B. Physical symptoms are prominent which are not explained by organic factors, C. Personality traits are significant, D. Symptoms run a chronic course
A: Symptoms do not normally reflect understandable physiological or pathological mechanism
Answer: A: Symptoms do not normally reflect understandable physiological or pathological mechanism 
Explanation: The preoccupation in hypochondriasis is based on a misinterpretation of physical symptom in the presence of normal body function. For example, an occasional change in heart rate will lead a person with hypochondriasis to fear of severe heart disease.
On the other hand, hysterical symptoms are not due to misinterpretation of physiological response.