This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Death and Investigations, Subject name: Forensic Medicine
[{'content': 'Smokeless gun powder is composed of - \nSelect and explain. \nA. KMnO4, B. HCN, C. Nitrocellulose, D. Sulphur', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Nitrocellulose o Smoke producing powder Black powder (black gun pow der), Pyrodex.o Smokeless powderBlack powder plus nitrocellulose'nitrocellulose + nitroglycerine,'nitroglycerine + nitrocellulose + nitroguanidine.o Semismokeless powder 80% black powder plus 20% smokeless powder.", 'role': 'assistant'}]