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
. Clostridium difficale infection occurs after ? 
Select and explain. 
A. After prolong antibiotic therapy, B. Pantoprazole increases the risk, C. Associated with use of rectal thermometer, D. All
D: All
Answer: D: All 
Explanation: Ans. is 'a' i.e., After prolong antibiotic therapy, 'b' i.e., Pantoprazole increases the risk, 'c' i.e., Associated with use of rectal thermometer