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': 'Malignant otitis externa affects which Cranial nerve: \nSelect and explain. \nA. 7th, B. 8th, C. 9th, D. 10', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. (a) 7thRef: Dhingra's ENT 6th edJ 52-53* Malignant otitis externa is an inflammatory condition caused by pseudomonas infection usually in elderly diabetic & those on immune-compromised drugs.* Facial nerve paralysis is common.", 'role': 'assistant'}]