This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
[{'content': 'What is not seen in massive resection of small bowel - \nSelect and explain. \nA. Hypogastrinemia, B. B12 Deficiency, C. Malabsorption, D. Oxalate Stone', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]