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: Pharmacology
[{'content': 'Second  generation  anti-histaminics  used  in  allergic rhinitis are \nSelect and explain. \nA. azelastine, B. Fexofenadine, C. Chlorpheniramine maleate, D. Desloratidine', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Chlorpheniramine and promethazine are first generation anti-histaminics.', 'role': 'assistant'}]