This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nerves of Upper Extremity, Subject name: Anatomy
Root value of supinator jerk - 
Select and explain. 
A. C3C4, B. C4C5, C. C5C6, D. C8T1
C: C5C6
Answer: C: C5C6 
Explanation: Ans. is 'c' i.e., C5 C6ReflexRoot valueBiceps reflex (biceps jerk)C5C6Supinator reflex (Supinator jerk)C5 C6Triceps reflex (Triceps jerk)C7C8Knee jerkL3L4Ankle jerkS1S2