Hoping to attract new customers, World Air airline is planning to offer its World Flights bonus plan for customers who fly more than six flights in any year. World Flights will entitle each customer who qualifies for one free domestic, round trip flight per year. More than 25% of World Air customers will qualify for this plan. Even with these free flights, World Air expects to increase profits substantially.
Which of the following, if true, would most seriously weaken the above argument?
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AWorld Air primarily flies domestically; they have only a limited number of international routes.
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BWorld Air currently flies with its aircraft less than 50% full.
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CThe World Air unions recently agreed to new contracts, featuring a 5% across the board wage increase rather than the 10% the unions had wanted.
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DWorld Air is considering expanding its routes to South America.
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EThe World Flights plan will require World Air to purchase a new computing system as well as lease several aircraft to cover the expected traffic caused by the free flights.
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正确答案: E