This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Disorder of Absorption, Subject name: Medicine
[{'content': 'Which cereal is not to be given in celiac sprue? \nSelect and explain. \nA. Wheat, B. Maize, C. Corn, D. Rice', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. (a) WheatRef.: Harrison 19th ed. /1940* Coeliac disease is caused by a reaction to gliadin found in wheat, oats, rye and Barley. Upon exposure to gliadin, there is production of anti-tissue transglutaminase antibody which cross-reacts with small-bowel tissue, causing an inflammatory reaction.* This leads to villous atrophy and leads to osmotic diarrhea.', 'role': 'assistant'}]