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: Radiology
Teeth affected by radiation hazard show: 
Select and explain. 
A. Occlusal caries, B. Proximal caries, C. Chronic caries, D. Rampant caries
D: Rampant caries
Answer: D: Rampant caries 
Explanation: None