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': 'Which end product of the citric acid cycle is used in detoxification of ammonia in the brain \nSelect and explain. \nA. Oxaloacetate, B. α-ketoglutarate, C. Succinate, D. Citrate', 'role': 'user'}, {'content': 'Answer: B \nExplanation: First read the reaction by which ammonia is detoxified in the brain.', 'role': 'assistant'}]