This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Unknown
[{'content': 'Root value of pudendal nerve - \nSelect and explain. \nA. S1S2S3, B. S2S3S4, C. S3-S4, D. S2-S3', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., S2S3S4 NerveRoot valveo Sciatic nervey Tibial nervey Common peroneal nerveL-4,5 S1,2,3L-4.5 S1,2,3L-4,5 S1,2o Superior gluteal nerveL-4,5 S1o Inferior gluteal nerveL5S1,2o The nerve to quadratus femorisL-4,5 S1o Nerve to obturatus internusL5S1,2o Superior gemellusL-4,5S1o Inferior gemellusL4,5 S1,2o The posterior cutaneous nerve of thighS1,2,3o Pudendal nerveS1, S3, S4o Perforating cutaneous nerveS2,3", 'role': 'assistant'}]