This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Surgery
[{'content': 'Punched out Ulcer in Esophagus on Endoscopy in a Immunocompromised patient is seen in \nSelect and explain. \nA. Herpes simplex, B. Herpes Zoster virus, C. CMV, D. Candidiasis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Herpes Simplex Esophagitis: - * Common in Immunocompromised patients. * Characterised by small raised herpetic vesicles few days before on the lips. * Endoscopy reveals- Vesicles and small ulcers with raised margins (Punched out) usually in upper half of esophagus. Ref:- Bailey and Love 27th Edition; Pg num:- 1104', 'role': 'assistant'}]