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': 'Lethal dose of krait venom: AP 11 \nSelect and explain. \nA. 3 mg, B. 6 mg, C. 12 mg, D. 15 mg', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. 6 mg', 'role': 'assistant'}]