When using a simple machine, the amount of out must be the same amount as put in

Using a simple machine, the machine cannot increase the amount of work, but can increase the amount of force. Simple machines are mechanical devices that changes the direction or magnitude of a force. They include; inclined plane, wedge, wheel and axle, lever, pulley and screw.

Explanation:

i would think b and c

this is a experment where you actully have to do the work like go take some photos in something your interstid in