Myelinated Neurons Are Especially Abundant in the

Myelinated neurons are especially abundant in the

A) gray matter of the brain and the white matter of the spinal cord.
B) white matter of the brain and the gray matter of the spinal cord
C) gray matter of the brain and the gray matter of the spinal cord.
D) white matter in the brain and the white matter in the spinal cord
E) all areas of the brain and spinal cord.