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': 'One gram of smokeless gunpowder produces: Karnataka 11 \nSelect and explain. \nA. 3000-4000 cc of gas, B. 9000-10,000 cc of gas, C. 12,000-13,000 cc of gas, D. 15,000-16,000 cc of gas', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. 12,000-13,000 cc of gas', 'role': 'assistant'}]