If both motor neurons shown in this figure were to develop action potentials and stimulate muscle fibers, would all the muscle cells shown here contract?

Below are the choices that can be found elsewhere.

-No, because neurons in this figure do not innervate every muscle cell shown. 
- Yes, because signals can be passed from stimulated muscle fibers to unstimulated ones. 
- Yes, because an entire muscle only needs one neuron to stimulate it in order to contract. 
- No, because it is impossible for more than one motor unit to contract at once

The answer is -No, because neurons in this figure do not innervate every muscle cell shown.