Box office receipts at movie theaters increased 40 percent last year over the previous year. Thus, the film industry overall evidently is prospering. Yet twice as many movie theaters went bankrupt last year as in the preceding two years combined. Which one of the following, if true, most helps to resolve the apparent discrepancy in the information above? ['Films cost, on average, twice as much to produce today as they did ten years ago.', "Those of last year's films that were successful were very profitable films that were shown by exclusive engagement at only a selection of the largest theaters.", 'Ticket prices at some theaters fell last year.', 'The amount of money spent on film advertising increased greatly last year over the year before, and the majority of this expense was absorbed by the producers and the distributors of films, not by the theater owners.']