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': 'Vitamin not deficient in celiac disease is? \nSelect and explain. \nA. Vitamin D, B. Vitamin B 12, C. Folic acid, D. Vitamin A', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Folk acid REF: Sheila Crowe - 2010 page 384, Harrison 17th ed chapter 288 Vitamins deficient in celiac disease are: Vitamin A Vitamin D Vitamin K Vitamin B12', 'role': 'assistant'}]