Hudson Kling Mows Yards During the Summer

Hudson Kling mows yards during the summer.Which of the following is an example of revenue for Kling?

A) a tire repair kit and extra air filters for the lawn mower
B) a trip to the lawn mower repair shop to get his machines blade sharpened
C) the new pair of shoes he had to buy because he accidentally ran over a pair with his mower
D) the $10 tip Mrs.Pierre gave him for doing such a fine job of mowing her yard
E) the gas can he had to buy so his mower wouldn't run out of gas while he mowed Mr.Johnson's five-yard pasture