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
[{'content': 'Root value of biceps jerk - \nSelect and explain. \nA. C3 C4, B. C4 C5, C. C5 C6, D. C8 T1', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., C5 C6o Repeat from previous sessions", 'role': 'assistant'}]