NowNews, although still the most popular magazine covering cultural events in Kalopolis, has recently suffered a significant drop in advertising revenue because of falling circulation. Many readers have begun buying a competing magazine that, at 50 cents per copy, costs less than NowNews at $1. 50 per copy. In order to boost circulation and thus increase advertising revenue, NowNews's publisher has proposed making it available at no charge, but this proposal has a serious drawback, since __. Which of the following most logically completes the argument below? ["NowNews's competitor would begin to lose large amounts of money if it were forced to lower its cover price.", 'Those Kalopolis residents with the greatest interest in cultural events are regular readers of both magazines.', "One reason NowNews's circulation fell was that its competitor's reporting on cultural events was superior.", 'The newsstands and stores that currently sell NowNews will no longer carry it if it is being given away for free.']