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: Medicine
[{'content': 'Pancreatitis, pituitary tumor and phaeochromocytoma may be associated with - \nSelect and explain. \nA. Medullary carinoma of thyroid, B. Papillary carinoma of thyroid, C. Anaplasticcarinoma of thyroid, D. Follicular carinoma of thyroid', 'role': 'user'}, {'content': 'Answer: A \nExplanation: medullary carcinoma of thyroid has 3 familial forms MEN 2A,MEN 2B, and familial MTC without other features of MEN (Harrison 17 pg 2246)', 'role': 'assistant'}]