Which of the Following Best Explains the Difference Between a Purchase

Which of the following best explains the difference between a purchase order and a purchase requisition?

A) Purchase orders contain quantities of merchandise to order; purchase requisitions do not.
B) Purchase requisitions contain suggested vendor names; purchase orders do not.
C) Several purchase orders might be consolidated on a single purchase requisition.
D) Purchase requisitions do not contain the "cost per unit," but purchase orders do.