This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous (Enzymes), Subject name: Biochemistry
[{'content': 'Cofactor of carbonic anhydrase is? \nSelect and explain. \nA. Molybdenum, B. Zinc, C. Copper, D. Selenium', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. (b) ZincRefiText of Biochemistry By G.P Talwar and LMSrivastava p 585, Shinde and Chatterjee 6th ed /-555', 'role': 'assistant'}]