An Unlimited-Payment Plan for Controlling the Salespeople's Expenses

An unlimited-payment plan for controlling the salespeople's expenses:

A) Is not used very often when the sales job is a complex,technical assignment.
B) Is not good in situations where management wants to develop a new territory.
C) Makes it difficult for management to accurately forecast its direct selling costs.
D) Is not very widely used.
E) None of these is correct.