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: Dental
Enamel infarctions can be detected by 
Select and explain. 
A. Direct illumination with visible light, B. Ultraviolet light source, C. Magnetic resonance imaging, D. Fibre optic light source
D: Fibre optic light source
Answer: D: Fibre optic light source 
Explanation: None