This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Adrenal Gland, Subject name: Pathology
[{'content': 'Which one of the following is not seen in pheochromocytoma? \nSelect and explain. \nA. Episodic hypeension, B. Arrhythmias, C. Headaches, D. Diarrhea', 'role': 'user'}, {'content': 'Answer: D \nExplanation: #NAME?', 'role': 'assistant'}]