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': 'The characteristic features of poisonous snakes are all EXCEPT : \nSelect and explain. \nA. Long fangs, B. Compressed tail, C. Nocturnal habit, D. Belly scales are incomplete', 'role': 'user'}, {'content': 'Answer: D \nExplanation: D i.e. Belly scales are incomplete', 'role': 'assistant'}]