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 anaerobic glycolysis \nSelect and explain. \nA. 2ATP + 2NAD, B. 2ATP + 2NADH, C. 2ATP + 2 FADH2, D. 4ATP + 2NAD', 'role': 'user'}, {'content': 'Answer: A \nExplanation: 2ATP and 2 NAD are the end product of anaerobic glycolysis.\n4ATPs are produced in total, but 2ATPs are used by hexokinase, PFK-1 (one each)', 'role': 'assistant'}]