This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Enzymes, Subject name: Biochemistry
[{'content': 'PKF-I Inhibitor \nSelect and explain. \nA. AMP, B. Citrate, C. Glucose 6 phosphate, D. Insulin', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Phosphofructokinase (PFK) (step 3) of glycolysis is the most impoant rate-limiting enzyme for glycolysis pathway. ATP and citrate are the most impoant allosteric inhibitors. AMP acts as an allosteric activatorRef: DM Vasudevan, Page no: 98', 'role': 'assistant'}]