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': 'Associated with shotguns only: AFMC 12 \nSelect and explain. \nA. Gunpowder, B. Primer, C. Projectile, D. Wads', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. Wads', 'role': 'assistant'}]