<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 67-year-old man with type 2 diabetes mellitus and benign prostatic hyperplasia comes to the physician because of a 2-day history of sneezing and clear nasal discharge. He has had similar symptoms occasionally in the past. His current medications include metformin and tamsulosin. Examination of the nasal cavity shows red, swollen turbinates. Which of the following is the most appropriate pharmacotherapy for this patients condition?? A: Desloratadine, B: Theophylline, C: Diphenhydramine, D: Nizatidine, E: Amoxicillin,  <response>: This is a clinical vignette about a 67-year-old man with type 2 diabetes, benign prostatic hyperplasia, and symptoms of rhinitis sneezing, nasal discharge. He has a history of similar rhinitis symptoms in the past. The question asks about the most appropriate pharmacotherapy for his condition.Based on the description, this patient most likely has allergic rhinitis causing his current symptoms. Allergic rhinitis is commonly treated with oral antihistamines like desloratadine to reduce symptoms. Theophylline is a bronchodilator used for asthmaCOPD. Diphenhydramine is an older, sedating antihistamine. Nizatidine is an H2 blocker for acid reflux. Amoxicillin is an antibiotic and would not be appropriate without evidence of a bacterial infection.Therefore, desloratadine is the most appropriate choice to treat this patients allergic rhinitis symptoms.A: Desloratadine 