Which of the following statements most accurately describes airline strategy? Group of answer choices a) Airline strategy is based on a business model and is a roadmap towards the future commercial value proposition of an airline. b) Airline strategy is a process which ensures all flights depart and arrive safely and on time. c) Airline strategy is a set of choices about acquisition of smaller airlines and entries into new markets. d) Airline strategy is a procedure of determination of optimal flight paths and air traffic control coordination. e) Airlines strategy is a choice of fleet and decision about aircraft maintenance of the fleet considering safety and regulatory requirements. f) Airline strategy is implementation of an effective frequent flyer program to build customer loyalty and grow customer retention