This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Biochemistry
[{'content': 'Products formed from alcohol but not the intermediate of TCA cycle? \nSelect and explain. \nA. Acetaldehyde, B. Succinate, C. Fumarate, D. Oxaloacetate', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Acetaldehyde is formed from alcohol and not intermediate of TCA cycle. Whereas, Succinate,fumarate and oxaloacetate all are intermediate of TCA', 'role': 'assistant'}]