This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Stomach & Duodenum, Subject name: Surgery
[{'content': 'Blind loop syndrome is characterized by: \nSelect and explain. \nA. Diarrhea, B. Deficiency of fat-soluble vitamins, C. Diagnosed by culture obtained through intestinal tube, D. All of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Blind loop syndrome: Post Billroth-II Gastrectomy procedure, stricture, diveicula Redundant afferent limb after billroth-II Sx | Collection of food | Bacterial overgrowth | Vit B12 Deficiency, diarrhea Dx: Bacteria culture Tx: Broad spectrum antibiotics - Tetracycline Parenteral vitamin B12 Supplementation', 'role': 'assistant'}]