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
The characteristic features of poisonous snakes are all except - 
Select and explain. 
A. Long fangs, B. Compressed tail, C. Nocturnal habit, D. Belly scales are incomplete
D: Belly scales are incomplete
Answer: D: Belly scales are incomplete 
Explanation: Belly scales are complete in poisonous snakes, i.e. belly scales cover entire breadth of belly.
Other three options are true regarding poisonous snakes.