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': 'Di collar is seen in: \nSelect and explain. \nA. Fire arm entry wound, B. Fire arm exit wound, C. Both of the above, D. None of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Fire arm entry wound', 'role': 'assistant'}]