The expression 33n+13f+7p+10d represents the cost, in dollars, to purchase n cases of paper, ff packages of hanging folders, pp packs of pencils, and dd flash drives. Which statement is NOT true?

A.) The term 7p represents the cost for 7 packs of pencils.

B.) The coefficient 10 represents the cost of each flash drive.

C.) The coefficient 7 represents the cost of one case of paper.

D.) The term 13f represents the cost of ff packages of hanging folders at $13 per package.