This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pathology, Subject name: Pathology
[{'content': 'Amyloid like stroma is seen in- \nSelect and explain. \nA. Papillary tumor, B. Follicular tumor, C. Medullary tumor, D. Anaplastic tumor', 'role': 'user'}, {'content': 'Answer: C \nExplanation: harshmohan textbook of pathology 7th edition. *most medullary carcinoma of thyroid have amyloid deposits in stroma which stains positively with Congo red.the amyloid deposits are believed to represents stored calcitonin derived from the neoplastic C cells in the form of pro hormone.', 'role': 'assistant'}]