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 which of the following weapons, empty caridge case is ejected after firing \nSelect and explain. \nA. Shotgun, B. Revolver, C. Pistol, D. Rifle', 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. Pistol', 'role': 'assistant'}]