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': 'Early mediators of allergic rhinitis are: \nSelect and explain. \nA. Leukotriene, B. IL-4, C. IL-5, D. All', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. is All', 'role': 'assistant'}]