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: Surgery
Guaiac slide test is used for 
Select and explain. 
A. Fecal occult stool test, B. H. Pylori detection, C. Bile acids in stool, D. None of the above
A: Fecal occult stool test
Answer: A: Fecal occult stool test 
Explanation: None