GRE QUESTION ON DEMAND

The cost of sending a package special delivery is x cents
per ounce up to 10 ounces and y cents for each ounce in
excess of 10. Which of the following represents the
total cost, in cents, of sending special delivery a
package weighing w ounces, if w > 10?
(A) x + (w - 10)y +10
(B) x + (w - 10) + y
(C) 10x + 10(w - y )
(D) 10x + y(w - 10)
(E) 10x + wy

BY--- DARSHAN D V from BANGALORE