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: Forensic Medicine
[{'content': 'The doctrine of res ipsa loquitur means \nSelect and explain. \nA. Common knowledge, B. Medical maloccurance, C. Fact speaks for itself, D. Oral evidence', 'role': 'user'}, {'content': 'Answer: C \nExplanation: The doctrine of res ipsa loquitur \xa0\nIt means “the thing or fact speaks for itself”.\nIn a case of professional negligence of a physician, the patient need not prove negligence.\nIt is applied when the following conditions are fulfilled :\n\nThat is the absence of negligence the injury would not have occurred ordinarily.\nThat the doctor had exclusive control over the injury-producing instrument or treatment.\nThat the patient was not guilty of contributory negligence.', 'role': 'assistant'}]