What is true about all real machines? =equals

>greater than

work output = work input

work output > Work Input

work output < work input

work output may be < or > work Input

I think it's the first one

Explanation:

I don't know though so don't trust me unless someone else says the same thing

the peripheral nervous system or pns contains the nerves, which leave the brain and the spinal cord and travel to certain areas of the body. the peripheral nervous system's main job is to send information gathered by the body's sensory receptors to the cns as quickly as possible.

i was thinking 4.0 v hope this