Evergreen Air Center Is the World's Largest Parking Lot for Unwanted

Evergreen Air Center is the world's largest parking lot for unwanted commercial aircraft.Airlines pay from $750 to $5,000 monthly for the storage services provided by Evergreen.Prior to September 2001,the company had 140 discarded airplanes at its Arizona facilities and was growing at a rate of about six planes monthly with about two per month sold for parts or scrap metal.After calamity struck the airline industry in September 2001,airlines retired over 1,000 planes,and the actual number of planes stored at Evergreen differed significantly from its earlier prediction.Evergreen needed a new marketing plan;without one,the company would see a widening of the

A) contribution margin.
B) planning gap.
C) marginal trend.
D) break-even point.
E) sales differential.