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': 'Trochlear and abducent nerve pass through \nSelect and explain. \nA. Optic canal, B. Superior orbital fissure, C. Inferior orbital fissure, D. Infraorbital foramen', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Optic nerve runs backwards and medially, and passes through the optic canal to enter the middle cranial fossaInferior orbital fissure transmits maxillary nerve, the zygomatic nerve etc.Infraorbital foramen transmits the infraorbital nerve and vessels', 'role': 'assistant'}]