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
Monitoring and diagnosis after completion of H. pylori treatment is done through 
Select and explain. 
A. Gastric acid test, B. urea breath test, C. bacterial culture of stool, D. sodium chloride test
B: urea breath test
Answer: B: urea breath test 
Explanation: None