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: Surgery
[{'content': 'The thyroiditis also known as "Painless Thyroiditis"? \nSelect and explain. \nA. Subacute lymphocytic, B. Dequervain\'s, C. Hashimoto, D. Riedel', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Subacute lymphocytic", 'role': 'assistant'}]