Is the peripheral nervous system part of the central nervous system?

Is the peripheral nervous system part of the central nervous system?

Select one:

a. No, but the peripheral nervous system is divided into two subsystems.

b. No, there is no such thing as a peripheral nervous system in the body.

c. Yes, it is what connects the right hemisphere to the left hemisphere.

d. Yes, it is the junction between the brain and the spinal cord.