A 60-year-old man is diagnosed with moderately severe COPD. He admits to a long history

A 60-year-old man is diagnosed with moderately severe COPD. He admits to a long history of cigarette smoking and is still currently smoking one pack per day. In counseling him about the benefits of smoking cessation, which of the following statements is most accurate? OA By quitting, his pulmonary function will significantly improve. OB By quitting, his current pulmonary function will be unchanged, but the rate of pulmonary function decline will slow. OC By quitting, his current pulmonary function and the rate of decline are unchanged, but there are cardiovascular benefits. OD By quitting, his age-related decline in pulmonary function will slow but will not approach that of a nonsmoker of the same age.

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