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
Vitamin not deficient in celiac disease is? 
Select and explain. 
A. Vitamin D, B. Vitamin B 12, C. Folic acid, D. Vitamin A
C: Folic acid
Answer: C: Folic acid 
Explanation: 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