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: Radiology
C Xylose test diagnostic of 
Select and explain. 
A. Coeliac disease, B. Lactose intolerance, C. Bacterial over growth, D. Whipples disease
A: Coeliac disease
Answer: A: Coeliac disease 
Explanation: Coeliac disease