Preganglionic neurons of the sympathetic nervous system are located in the

A) lateral gray horns of the cervical cord.
B) anterior gray horns of the cervical and thoracic spinal cord.
C) lateral gray horns of segments T1 to L2 of the spinal cord.
D) anterior gray horns of segments T1 to L2 of the spinal cord.
E) lateral gray horns of T1 to S2 of the spinal cord.