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
In liver, which of the following is responsible for metabolism of alcohol ? 
Select and explain. 
A. Alcohol dehydrogenase (ADH), B. Aldehyde dehydrogenase (ALDH), C. Microsomal ethanol-oxidizing system (MEOS), D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: None