Most Compensation Plans Credit a Salesperson with a Sale

Most compensation plans credit a salesperson with a sale:

A) When the order is accepted by the company, less any returns and allowances
B) After payment is received from the customer
C) Only after the goods have been shipped
D) In a combined manner, where one-half of the sale is assigned when the order is received and the other half when the customer pays
E) In a variety of ways, with no one way being more popular than any other