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 of the following medications should be used for pheochromocytoma associated hypeension after phenoxybenzamine is staed? \nSelect and explain. \nA. Amlodipine, B. Propranolol, C. Nifedipine, D. Diltiazem', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Option B- in order to control tremors and palpitation complaints in the patient For Pheochromocytoma : (a+b) =Ideal management recommended protocol (b+a) = C/I', 'role': 'assistant'}]