This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nutrition, Subject name: Medicine
Which of the following statements regarding the schilling test for vitamin B|2 malabsorption is most accurate? 
Select and explain. 
A. The schilling test results are abnormal in patients with dietary vitamin B,,deficiency, B. In patients with pernicious anemia, the results of the schilling test normalize after oral administration of intrinsic factor, C. In patients with ileal disease, the results of the schilling test normalize after oral administration of intrinsic factor, D. Pancreatic exocrine insufficiency does not cause schilling test results to be abnormal
B: In patients with pernicious anemia, the results of the schilling test normalize after oral administration of intrinsic factor
Answer: B: In patients with pernicious anemia, the results of the schilling test normalize after oral administration of intrinsic factor 
Explanation: Ans. is 'b' i.e., In patients with pernicious anemia, the results of the schilling test normalize after oral administration of intrinsic factor An abnormal Schilling Is test that corrects or normalizes after administration of intrinsicfactor suggests a diagnosis of Pernicious Anemia (Intrinsic Factor Deficiency).Shilling '.s' test corrects after the administration ofo Intrinsic factor-Pernicious anemiao Pancreatic enzyme-Exocrine pancreatic deficiencyo Five day antibiotic-Bacterial overgrowth syndromeso Does not correct after administration of any of the above-Ileal dysfunction