A Myelinated Nerve Fiber Is ________, Whereas an Unmyelinated Nerve Fiber

Multiple Choice

A myelinated nerve fiber is ________, whereas an unmyelinated nerve fiber is ________.

A) gray, and composing the gray matter of the brain and spinal cord; white, and composing the white matter of the brain and spinal cord
B) white, and composing the gray matter of the brain and spinal cord; gray, and composing the white matter of the brain and spinal cord
C) white, and composing the white matter of the brain and spinal cord; gray, and composing the gray matter of the brain and spinal cord
D) white, and composing the gray matter of the brain and spinal cord; red, and composing the white matter of the brain and spinal cord