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': 'In TCA cycle, citrate is conveed into, after losing a molecul of H20 - \nSelect and explain. \nA. Isocitrate, B. Cis-aconitate, C. Oxaloacelate, D. Glutarate', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e. Cis aconitate', 'role': 'assistant'}]