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': 'Damage produced by a bullet fired from a....... person in direct propoion : \nSelect and explain. \nA. Size, B. Shape, C. Velocity, D. All', 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. Velocity', 'role': 'assistant'}]