Carbonic anhydrase is strongly inhibited by the drug acetazolamide, which is used as a diuretic. Carbonic anhydrase plays a significant role in the secretary processes because it participates in regulating the pH and bicarbonate of body fluids. The experimental curve of initial reaction velocity versus [S] for the carbonic anhydrase is shown below. When the experiment is repeated in the presence of acetazolamide, the lower curve is obtained. Determine the nature of inhibition. Explain with reason.