What Is the Relationship Between the Motor Neurons and Muscle

What is the relationship between the motor neurons and muscle fibers?

A) Each neuron innervates only one muscle fiber.
B) The more muscle fibers a neuron innervates,the more precise the movements.
C) The more neurons to a single muscle fiber,the more precise the movements.
D) The fewer muscle fibers to a single neuron,the more precise the movements.