This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Disorders of Adrenal Gland, Subject name: Medicine
[{'content': 'Which is the most common clinical feature of pheochromocytoma? \nSelect and explain. \nA. Profuse sweating, B. Palpitations, C. Diarrhea, D. Headaches', 'role': 'user'}, {'content': 'Answer: D \nExplanation: The most common clinical feature is headaches due to paroxysmal hypeension. The mnemonic to remember triad for suspecting pheochromocytoma is PHD- Palpitations, Hypeension,Hypercalcemia Diaphoresis. Note: Remember it is a mnemonic and does not imply that most common feature is palpitations.', 'role': 'assistant'}]