This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ear, Subject name: ENT
[{'content': "All are true for Gradenigo's syndrome except \nSelect and explain. \nA. It is associated with conductive hearing loss, B. It is caused by an abscess in the petrous apex, C. It leads to involvement of the cranial nerve V and VI, D. It is characterised by retro-orbital pain", 'role': 'user'}, {'content': 'Answer: A \nExplanation: Gradenigo&;s syndrome consists of: Ear discharge (suppurative otitis media) Diplopia (CN VI paralysis) Retro-orbital pain (CN V) involvement. It is due to petrositis - a complication of otitis media.', 'role': 'assistant'}]