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: Microbiology
All are true regarding H.Pylori except - 
Select and explain. 
A. Less prevalent in developing countries, B. Ulcer is caused by toxigenic strains, C. Urea breath +ve test is a rapid method of detection, D. Gram -ve organism
A: Less prevalent in developing countries
Answer: A: Less prevalent in developing countries 
Explanation: None