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
[{'content': 'One of the following usually differentiates hysterical symptoms from hypochondriacal symptoms: \nSelect and explain. \nA. Symptoms do not normally reflect understandable physiological or pathological mechanism., B. Symptoms do not normally reflect understandable physiological or pathological mechanism., C. Personality traits are significant, D. Symptoms run a chronic course', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. Symptoms do not normally reflect understandable physiological or pathological mechanism', 'role': 'assistant'}]