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': 'Arginine enters TCA Cycle by forming which substrate \nSelect and explain. \nA. Fumarate, B. α Ketoglutarate, C. Oxaloacetabe, D. Succinyl CoA', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]