This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pharmacology
[{'content': 'Which of the following enzymes does NOT contain Zn? (NOT RELATED) \nSelect and explain. \nA. Alcohol Dehydrogenase, B. Arginase, C. Alkaline Phosphatase, D. Carbonic Anhydrase', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Zinc is required for the activity of > 300 enzymes, covering all six classes of enzymes. alcohol dehydrogenase; superoxide dismutase; transferases like RNA polymerase and aspaate transcarbamoylase; hydrolases like carboxypeptidase A and thermolysin; lyases like carbonic anhydrase and fructose-1,6-bisphosphate aldolase; isomerases like phosphomannose isomerase; and ligases like pyruvate carboxylase and aminoacyl-tRNA synthases', 'role': 'assistant'}]