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': 'Which of the following structures is inferior to spheno petrosal Synchondrosis - \nSelect and explain. \nA. Abducens nerve, B. Osseous part of auditory tube, C. Cartilaginous part of auditory tube, D. Petro squamous sinus', 'role': 'user'}, {'content': 'Answer: C \nExplanation: o Lateral part of inferior surface of petrous part of temporal articulates with greater wing of sphenoid (spheno-petrosal synchondrosis) to form sulcus tubae for the ludgement of cartilaginous part of auditory tube.', 'role': 'assistant'}]