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
[{'content': 'Most of the detoxification reactions are mainly carried out in: \nSelect and explain. \nA. Liver, B. Brain, C. Kidney, D. Spleen', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Most of the detoxification reactions are mainly carried out in liver, as cytochrome P450 is found in liver in the highest concentration.', 'role': 'assistant'}]