Candy is on sale for $0.75 each. You have a coupon for $0.25 off your total purchase. Write a function rule for the cost of n pieces of candy.

(1 point)
A- C(n) = 0.25n - 0.75
B- C(n) = 0.75 -0.25
C- C(n) = 1.0n
D- C(n) = 0.75n

The correct function rule for the cost of n pieces of candy is:

D- C(n) = 0.75n