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: Medicine
[{'content': 'The predominant symptom/sign of pheochromocytoma is: \nSelect and explain. \nA. Sweating, B. Weight loss, C. Ohostatic hypotension, D. Episodic hypeension', 'role': 'user'}, {'content': "Answer: D \nExplanation: Answer is D (Episodic Hypeension): The predominant manifestation of Pheochromocytoma is Hypeension which classically presents as Episodic Hypeension (Sustained Hypeension and Ohostatic Hypotension may also be seen). 'The dominant sign is Hypeension. Classically patients have episodic hypeension, but sustained hypeension is also common' - Harrison", 'role': 'assistant'}]