question: Q:During a study on chronic obstructive pulmonary disease (COPD), researchers discovered an agent that markedly inhibits the carbon dioxide-carrying capacity of the venous blood. Which of the following is the most likely mechanism underlying this agent’s effects?? 
  {'A': 'Decreased capillary permeability to carbon dioxide', 'B': 'Decreased carbon dioxide binding to carbamino compounds', 'C': 'Decreased amount of dissolved plasma carbon dioxide', 'D': 'Inhibition of erythrocyte carbonic anhydrase', 'E': 'Increased solubility of carbon dioxide in plasma'},