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
All are involved MEN type II A except 
Select and explain. 
A. parathyroid, B. Adrenal, C. Thyroid, D. Pituitary
D: Pituitary
Answer: D: Pituitary 
Explanation: 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.