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, substrate level phosphorylation takes place in: \nSelect and explain. \nA. Alpha Ketoglutarate to succinyl CoA, B. Succinyl CoA to Succinate, C. Succinate to fumarate, D. Oxaloacetate to citrate', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]