This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Medicine
[{'content': 'The following are consistent with pheochromocytoma except- \nSelect and explain. \nA. Episodic diarrhea, B. Episodic flushing of skin, C. Episodes of hypeension, D. Paroxysm, palpitation and sweating', 'role': 'user'}, {'content': 'Answer: A \nExplanation: there is constipation not diarrhea Ref- ( Harrison 17 pg 2270)', 'role': 'assistant'}]