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
What a patient with gluten hypersensitivity can consume -a) Riceb) Barleyc) Cornd) Rye 
Select and explain. 
A. b, B. c, C. ac, D. ad
C: ac
Answer: C: ac 
Explanation: None