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': 'Key glycolytic enzymes: \nSelect and explain. \nA. Phosphofructokinase, B. Hexo kinase, C. Pyruvate kinase, D. All of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: A i.e. Phosphofructo kinase; B i.e. Hexo kinase; C i.e. Pyruvate kinase', 'role': 'assistant'}]