Decide if each expression represents a proportional (P) or non-proportional (NP) relationship.
A) The cost of purchasing a basket of oranges is $0.55 per orange and $12 for the basket.
B) The cost of purchasing apples for $1.75 per pound plus a shipping fee of $0.16 per pound.
C) The cost of purchasing peaches for $9.50 per box of peaches with a delivery charge of $4.75
D) The cost of purchasing grapefruit for $1.80 per pound with a coupon for $1.00 off the total cost.