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: Unknown
[{'content': 'Psammoma bodies are seen in all of the following conditions except- \nSelect and explain. \nA. Follicular CA of thyroid, B. Papillary CA of thyroid, C. Serous cystadenocarcinoma of ovary, D. Meningioma', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans is 'a' i.e. Follicular Ca thyroid", 'role': 'assistant'}]