To which of the following situations can the function y=5x+10 best be applied?
A. The number of miles a person walks if he walks for 5 hours at the rate of 10 miles per hour
B. The total weight on a scale if 5 pounds is placed there initially and a series of 10-pound weights are added to it
C. The total wages earned by a waiter who is paid $5 per hour and earns $10 in tips
D. The combined length of 5 boards, each 10 feet longer than the width of a doorway