A 39-year-old man with untreated HIV (CD4 count 45 cells/μL) presents with odynophagia and retrosternal chest pain for 2 weeks. He denies antacid use. Vital signs show BP 118/76, HR 102, RR 18, Temp 37.8°C, SpO2 98% on room air. Upper endoscopy reveals white plaque-like lesions throughout the esophagus that can be scraped off, with no evidence of ulceration. Which of the following is the most likely diagnosis?

1. A)Candida esophagitisGABARITO
2. B)HSV esophagitis
3. C)Pill esophagitis
4. D)Eosinophilic esophagitis
5. E)CMV esophagitis