This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Anatomy
[{'content': 'The first step in alcohol metabolism by the liver is the forma on of acetaldehyde from alcohol, a chemical reaction catalyzed by \nSelect and explain. \nA. Cytochrome P450, B. NADPH-cytochrome reductase P450, C. Alcohol oxygenase, D. Alcohol dehydrogenase', 'role': 'user'}, {'content': 'Answer: D \nExplanation: .', 'role': 'assistant'}]