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: Radiology
[{'content': 'Most accurate method of measuring radiation dose is: \nSelect and explain. \nA. Film badges., B. Thermoluminescent dosimeter., C. Ionization chamber., D. All of the above.', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]