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
Second generation antihistaminics used in allergic rhinitis are : 
Select and explain. 
A. Azelastine, B. Fexofenadine, C. Desloratadine, D. All of these
D: All of these
Answer: D: All of these 
Explanation: Chlorpheniramine and promethazine are first generation antihistaminics.