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: Biochemistry
What can be prevented by inhibiting aldose reductase in diabetes mellitus ? 
Select and explain. 
A. Deafness, B. Diabetic nephropathy, C. Diabetic neuropathy, D. Diabetic cataract
D: Diabetic cataract
Answer: D: Diabetic cataract 
Explanation: Ans. is 'd' i.e., Diabetic cataractWhen there is excessive glucose, e.g., in diabetes, it is conveed to sorbitol by aldose reductose. Sorbitol is responsible for accumulates in the lens and causes diabetic cataract.