Ayres Corp

Multiple Choice

Ayres Corp.makes airplanes.It sells about 50 planes a year to be used as crop dusters.It sells another 75 a year to delivery companies.In addition,it manufactures another dozen or so that are used for fire fighting and about six a year that are sold for military transport purposes.
-Refer to Airplanes.What type of variable does Ayres Corp.use?

A) company characteristics
B) usage rate
C) demographic
D) benefit