While Assessing the Extent of Spinal Cord Injury in a Client

While assessing the extent of spinal cord injury in a client using the American Spinal Injury Association (ASIA) impairment scale, the nurse concludes that the client belongs to category C. Which findings enabled the nurse to reach this conclusion?

A) The sensory and motor functions are normal.
B) There is no sensory or motor function preserved in the sacral segments S4-S
C) The sensory function is preserved with no motor function below the neurological level.
D) There is motor function is preserved, and most key muscles below the neurologic level have a muscle grade less than 3.