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': 'Cholinesterase is seen in venom of: DNB 08 \nSelect and explain. \nA. Elapids, B. Vipers, C. Sea snakes, D. All', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. Elapids', 'role': 'assistant'}]