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: Pathology
[{'content': 'All are involved MEN type II A except \nSelect and explain. \nA. parathyroid, B. Adrenal, C. Thyroid, D. Pituitary', 'role': 'user'}, {'content': 'Answer: D \nExplanation: MEN2A or Supple syndrome constitutes pheochromocytoma : Adrenal medullary carcinoma :thyroid Parathyroid hyperplasia. It is due to germline mutation of RET proto oncogene . Pituitary abnormalities are seen in MEN1.', 'role': 'assistant'}]