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': 'On endoscopy there is Serpiginous Ulcers in Distal Esophagus with otherwise normal mucosa seen- Diagnosis is \nSelect and explain. \nA. Herpes Simplex, B. Candidiasis, C. Pill induced, D. CMV', 'role': 'user'}, {'content': 'Answer: D \nExplanation: CMV Esophagitis: - * Seen in Graft versus host disease following BM transplantation. * Endosocopy shows characteristic - Geographical or Serpentine border. Ref:- Bailey and Love 27th Edition; Pg num:- 1104', 'role': 'assistant'}]