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': "Casper's Dictum is used for \nSelect and explain. \nA. Identification of Body, B. Estimation of time since death, C. Establishing cause of death, D. Establishing weapon of Injury", 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e. Estimation of time since death', 'role': 'assistant'}]