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': 'A patient presents with lower gastrointestinal bleed. Sigmoidoscopy shows ulcers in the sigmoid. Biopsy from this area shows flask-shaped ulcers. Which of the following is the most appropriate treatment? \nSelect and explain. \nA. Intravenous ceftriaxone, B. Intravenous metronidazole, C. Intravenous steroids sulphasalazine, D. Hydrocoisone enemas', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Amoebic Colitis MC site of amoebic colitis : Cecum and ascending colon Flask shaped ulcers on colonoscopu confirms the diagnosis of amoebic colitis Drug Therapy for Amebiasis Asymptomatic carrier: Luminal agents (Iodoquinol, paromomycin) Acute colitis: Metronidazole and Luminal agents Amebic livet abscess: Metronidazole, tinidazole and Luminal agents Ref: Harrison&;s 19th edition Pgno : 1365', 'role': 'assistant'}]