This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Anatomy
[{'content': 'The cranial nerve passing through Dorello canal is \nSelect and explain. \nA. 4th, B. 5th, C. 6th, D. 7th', 'role': 'user'}, {'content': "Answer: C \nExplanation: At petrous apex, the abducent nerve takes a sharp turn to pass through Dorello's canal beneath petrosphenoidal ligament.", 'role': 'assistant'}]