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': "MicroWick and Microcatheter sustained release devices are used in - \nSelect and explain. \nA. Drooling of saliva, B. Frey's syndrome, C. Conrol of epistaxis, D. Delivering drug to the round membrane", 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]