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: Anatomy
[{'content': 'Sacrotuberous ligament is not pierced by \nSelect and explain. \nA. Coccygeal branch of Inferior gluteal nerve, B. Perforating cutaneous nerves, C. Posterior cutaneous nerve of thigh, D. Filaments of Coccygeal plexus', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Sacrotuberous ligament is pierced by\n\nCoccygeal branch of Inferior gluteal nerve\nPerforating cutaneous nerves\nFilaments of Coccygeal plexus', 'role': 'assistant'}]