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: Ophthalmology
Cataract is caused by al! except: 
Select and explain. 
A. Ultraviolet radiation, B. M RI, C. Infrared radiation, D. Microwave radiation
B: M RI
Answer: B: M RI 
Explanation: Ans. M RI