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: Pharmacology
The disulfiram alcohol reaction occurs due to inhibition of which enzyme: 
Select and explain. 
A. Alcohol reductase, B. Alcohol dehydrogenase, C. Aldehyde reductase, D. Aldehyde dehydrogenase
D: Aldehyde dehydrogenase
Answer: D: Aldehyde dehydrogenase 
Explanation: None