Which Description Is Not True Regarding "Pricing Arrangements

Which description is not true regarding "pricing arrangements"?

A) To establish a written, binding contract, a definite price should be set forth in the purchase order; this may be either a specific price or a basis for determining a final price
B) In the case of standard items that have an established market price, such as beverages, it is not a binding contract if you don't put a price on the purchase order
C) In the case of standard items that have an established market price, such as beverages, even if you don't put a price on the purchase order it is still a binding contract
D) The established practice to avoid confusion or even legal problems is to include either a specific price or a basis for determining a final price in the body of the purchase order