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': 'Which of following enzyme is active in dephosphorylated form? \nSelect and explain. \nA. Glucokinase, B. PFK-2, C. Pyruvate kinase, D. All of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Enzyme active in dephosphorylated form:\n\nGlucokinase\nPhosphofructose kinase - 2\nPyruvate kinase\n\nHarper 30th edition', 'role': 'assistant'}]