John has an injury to the lower thoracic spinal cord experienceda loss of pain sensation on the right side of the lower bodyfollowing the injury since ________?
a. the left side of the spinal cord contains neuronal bodiesthat transmit painful stimuli from both sides of the body.
b. thalamocortical neurons send collaterals that cross over themidline of the brain, innervating the somatosensory cortex on thecontralateral side of the body from the lesion.
c. the nucleus gracilis receives input from the contralateralnociceptive DRG neurons
d. DRG neurons transmitting ascending nociceptive informationcross over the midline of the spinal cord at the spinal segmentreceiving the input.
e. the right side is primarily innervated by TrkC-expressingneurons in left DRGs
