This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Small & Large Intestine, Subject name: Surgery
[{'content': 'Which is not seen in massive resection of small bowel? \nSelect and explain. \nA. Hypogastrinemia, B. Vitamin B12 deficiency, C. Malabsorption, D. Oxalate stone', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. (a) HypogastrinemiaRef: Sabiston 19th edition, page 1274-1276* Due to loss of small intestine feedback inhibition to gastrin is lost -- hence there will be hypergastrinemia* 70% resection can be tolerated in small intestine* Proximal bowel resection is tolerated much better than distal bowel* Presence of terminal ileum and IC valve is much tolerated', 'role': 'assistant'}]