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': 'In majority of the medical negligence cases, the burden of proof lies on the patient. which of the following is an exception to this? \nSelect and explain. \nA. Res Indicata, B. Res Ipsa loquitur, C. Calculated risk doctrine, D. Res Judicata', 'role': 'user'}, {'content': "Answer: B \nExplanation: Res Ipsa loquitur ( the thing speaks for Itself ). In this case, negligent act is very obvious and the patient does not have to prove the doctor's guilt with medical evidence.", 'role': 'assistant'}]