This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Gluconeogenesis, Subject name: Biochemistry
[{'content': 'Arrange the following 4 enzymes of gluconeogenesis in sequence: A. Pyruvate carboxylase B. Glucose - 6 - phosphatase C. Phosphoenol pyruvate carboxy kinase D. Fructose 1,6 Bisphosphatase \nSelect and explain. \nA. D-C-A-B, B. A-C-D-B, C. B-A-D-C, D. C-D-B-A', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]