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: Ophthalmology
[{'content': 'All of the following structures are located in the lateral wall of the cavernous sinus except: \nSelect and explain. \nA. Abducent nerve, B. Oculomotor nerve, C. Trochlear nerve, D. Ophthalmic nerve', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. Abducent nerve', 'role': 'assistant'}]