Airlines That Restrict Members' Ability to Use Frequent Flyer Miles

Multiple Choice

Airlines that restrict members' ability to use frequent flyer miles during holiday periods likely do so because:

A) ​the opportunity cost to airlines of filling seats with frequent flyers is lower at these times.
B) ​the opportunity cost to airlines of filling seats with frequent flyers is higher at these times.
C) ​passengers have more transportation alternatives available to them at these times.
D) ​airlines want to protect their most loyal customers from the discomfort of overcrowded airplanes.