JL is a 22-year-old female who is complaining of the following SEVERE allergic rhinitis nasal symptoms: nasal congestion, and a runny/itchy nose. She has experienced these symptoms in the past. She states she typically feels this way every Fall for the last 3 years. Which of the following medication recommendations is MOST appropriate for JL?

A. Fluticasone propionate nasal spray daily: Intranasal corticosteroids like fluticasone are first-line therapy for moderate to severe allergic rhinitis. They target the underlying inflammatory response by reducing histamine release, cytokine production, and nasal mucosal edema, effectively controlling nasal congestion, rhinorrhea, and itching. B. Diphenhydramine oral capsules every 4 hours: Diphenhydramine is a first-generation antihistamine that can relieve sneezing, itching, and rhinorrhea. However, it causes significant sedation and anticholinergic side effects. For chronic, recurrent seasonal allergic rhinitis, it is less practical for daily long-term use compared with intranasal corticosteroids. C. Loratadine oral tablets daily: Loratadine is a second-generation antihistamine that reduces sneezing, itching, and rhinorrhea without significant sedation. While effective for mild to moderate symptoms, it is often less effective than intranasal corticosteroids for controlling severe congestion and comprehensive nasal inflammation. D. Phenylephrine oral tablets every 4 hours: Phenylephrine is a systemic decongestant that temporarily reduces nasal swelling by vasoconstriction. It does not treat the underlying allergic inflammation, and prolonged or frequent use can cause rebound congestion, making it inappropriate as first-line therapy for chronic seasonal allergic rhinitis.