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': 'What is the end product of catabolism of pyrimidine? \nSelect and explain. \nA. NH3, B. CO2 & H2O, C. Both, D. None', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The end products of pyrimidine catabolism is CO2 and H2O.', 'role': 'assistant'}]