9 Jaycie wants to increase her upper body strength
by doing push-ups. She does one push-up by
applying a force of 10 N to raise her center of
gravity 2 m. How many push-ups must Jaycie
complete to do 200 J of work?
A. 5 push-ups

B. 10 push-ups

C. 15 push-ups

D. 20 push-ups

Please explain how the answer is correct, and how the rest of the answers are incorrect.

Thank you.