A Limited Payment Plan for Controlling Sales Representatives' Expenses Is

A limited payment plan for controlling sales representatives' expenses is likely to be used when:

A) The sales reps for an aircraft manufacturer are selling a new model plane to TWA and United Air Lines.
B) The sales reps pay their own expenses.
C) A sales rep is selling a computer system to state government departments in Illinois.
D) The sales reps frequently have unusual expenses.
E) A drug wholesaler has sales reps regularly calling on drugstores in Colorado and Wyoming.