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: Pharmacology
Non competitive inhibitor of carbonic anhydrase? 
Select and explain. 
A. Allopurinol, B. Acetazolamide, C. Bimatoprost, D. Dipivefrine
B: Acetazolamide
Answer: B: Acetazolamide 
Explanation: Ans. is 'b' i.e., Acetazolamide Carbonic anhydrase inhibitors act by a non-competitive, reversible inhibition of the enzyme carbonic anhydrase.