In the past, the railroads in Ostronia were run as regional monopolies and operated with little regard for what customers wanted. In recent years, with improvements to the Ostronian national highway network, the railroad companies have faced heavy competition from long-distance trucking companies. But because of government subsidies that have permitted Ostronain railroad companies to operate even while incurring substantial losses, the companies continue to disregard customers' needs and desires. If the statements above are true, which one of the following must also be true on the basis of them? ['Without government subsidies, railroad companies in Ostronia would have to increase the prices they charge their customers.', 'In recent years, some companies in Ostronia that have had little regard for the desires of their customers have nonetheless survived.', 'If the government of Ostronia ceases to subsidize railroad companies, few of those companies will continue to operate.', 'The transportation system in Ostronia is no more efficient today than in was in the past.']