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: Medicine
[{'content': 'Which of the following vitamin deficiencies is most commonly seen in short bowel syndrome - \nSelect and explain. \nA. Vitamin B12, B. Biotin, C. Vitamin B1, D. Vitamin K', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]