QUESTION 19 Brad orders a pizza. He uses a 20% off coupon and then pays $3 for a delivery tip. Which composition function below gives the total amount paid if x is the cost of the pizza, c (x) is the coupon function, and d (x) is the delivery function? Of. (cod) (x) , d(x) =0.8x OB. (doc) (x) , c(x) = 0.8x O c. ( doc ) ( x ) , c ( x ) = 0 .2x OP. (cod) (x) , d(x) = 0.2x