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
[{'content': 'In liver, which of the following is responsible for metabolism of alcohol ? \nSelect and explain. \nA. Alcohol dehydrogenase (ADH), B. Aldehyde dehydrogenase (ALDH), C. Microsomal ethanol-oxidizing system (MEOS), D. All of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]