Which of the following most logically completes the argument below?CultureToday, although still the leading magazine covering cultural events in Rivertown, has recently experienced a notable decline in advertising revenue due to decreasing circulation. Many readers have started purchasing a rival magazine that, at 75 cents per copy, is cheaper than CultureToday at $2.00 per copy.

To enhance circulation and thereby increase advertising revenue, CultureToday's publisher has suggested offering it for free, but this proposal has a significant drawback, since _______.