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: ENT
[{'content': "What is the indication of using Micro Wick and Microcatheter sustained release devices? \nSelect and explain. \nA. Drooling of saliva, B. Frey's syndrome, C. Conrol of epistaxis, D. Deliver drug to the round membrane", 'role': 'user'}, {'content': 'Answer: D \nExplanation: Micro Wick and Microcatheter are methods of delivery of medications directly to the inner ear.', 'role': 'assistant'}]