zelma buys p pounds of bananas for 40 cents per pound. she pays the clerk with a $20 bills. The clerk Subtract The total cost of the banana from the $20 bill to determine the amount of change to give zelma. which expression represents the amount of change Zelma should received?

[tex]A.p-20
B.20-40p
C.20-0.40p
D.0.40p-20