After a Car Accident,the ER Doctor Uses a Hammer to Test

After a car accident,the ER doctor uses a hammer to test your patellar reflex response.You have no initial knee jerk response but after 2 weeks your response is exaggerated.What does it indicate?

A) The neurons within the brain or spinal cord that modify this reflex have been damaged.
B) The neurons within the periphery have been damaged.
C) Your cerebral cortex was damaged but has since re-routed your spinal reflexes.
D) Your spine had been severed but has since regrown.
E) The withdrawal reflex has taken over the stretch reflex function.