This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
[{'content': "Werner's syndrome (multiple endocrine neoplasia type I) is characterised by all of the following except - \nSelect and explain. \nA. Tumours of anterior pituitary, B. Tumours of parathyroids, C. Pancreatic adenomas, D. Phaeochromocytoma", 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]