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': 'Cranial nerve related to apex of the petrous temporal bone -a) VIIIb) VIIc) VId) Ve) IX \nSelect and explain. \nA. cd, B. bc, C. bd, D. ac', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Site\n\n\nCranial Nerves\n\n\n\n\n\xa0Sphenoid fissure (superior orbital)\n\n\n\xa0III, IV, first division V, VI\n\n\n\n\n\xa0Lateral wall of cavernous sinus\n\n\n\xa0III, IV, first division V, VI, often with proptosis\n\n\n\n\n\xa0Retrosphenoid space\n\n\n\xa0II, III, IV, V, VI\n\n\n\n\n\xa0Apex of petrous bone\n\n\n\xa0V, VI\n\n\n\n\n\xa0Internal auditory meatus\n\n\n\xa0VII, VIII\n\n\n\n\n\xa0Ponto cerebellar angle\n\n\n\xa0V, VII, VIII and sometimes IX\n\n\n\n\n\xa0Jugular foramen\n\n\n\xa0IX, X, XI\n\n\n\n\n\xa0Posterior laterocondylar space\n\n\n\xa0IX, X, XI, XII\n\n\n\n\n\xa0Posterior retroparotid space\n\n\n\xa0IX, X, XI, XII and homer \xa0syndrome', 'role': 'assistant'}]