Fast Flights Inc. is trying to decide between two different models of plane to use in its operations. The cost information for the two models is as follows: Plane A Plane B Purchase price $625,000 $540,000 Annual insurance cost $ 72,000 $ 66,000 Annual maintenance cost $ 35,000 $ 35,000 Extended warranty $ 4,000 $ 16,000 Which one of the following represents an irrelevant cost for Fast Flights Inc.'s decision? Spreadsheet Xlsx Available answer options Select only one option A Purchase price B Insurance cost C Maintenance cost D Extended warranty