Which of the following most logically completes the argument? A. the value of a car that is bought new declines much more rapidly than does the value of a car that is bought used B. after someone has bought a car, it might be several years before that person next buys a car C. a decline in the proportion of car buyers who buy new cars must necessarily mean that the proportion who buy used cars has increased D. the relative increase in used-car sales might be explained by the decisions of only a small proportion of all car buyers E. the change in the average price paid for a new car could result solely from more people's rejecting inexpensive new cars in favor of used cars