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
Best Test for intestinal malabsorption 
Select and explain. 
A. D-xylose test, B. NBT-PABA TEST, C. Fecal fatestimation, D. Schilling test
A: D-xylose test
Answer: A: D-xylose test 
Explanation: None