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': 'Products formed from alcohol and not intermediates of TCA cycle/glycolysis: \nSelect and explain. \nA. Acetaldehyde, B. Pyruvate, C. Lactate, D. Oxalate', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. Acetyldehyde', 'role': 'assistant'}]