please please please please help
A man begins pushing a lawn mower across a lawn from a standing start. Which of the following is true?

a. You cannot tell whether the kinetic energy of the lawn mower is increasing or decreasing from the information given b. The man is decreasing the kinetic energy of the lawn mower
c. the kinetic energy of the lawn mower is not changing.
d. The man is increasing the kinetic energy of the lawn mower