Which of the following best describes the capacity-frequency dilemma for airlines? Group of answer choices a) It involves determining the optimal balance between offering more seats with bigger aircraft and offering more frequent flights with smaller aircraft. b) It indicates the challenge airlines face in adapting their fleets to meet evolving market demands and technological advancements. c) It signifies the dilemma airlines encounter when deciding between investing in new routes or expanding existing ones to grow their market share. d) It denotes the competition between airlines to secure prime slots at congested airports to maximize their flight schedules