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
Cause of clostridium difficle associated diarrhea ? 
Select and explain. 
A. Trauma, B. Dairy products, C. Fried rice, D. Antibiotic use
D: Antibiotic use
Answer: D: Antibiotic use 
Explanation: Ans. is 'd' i.e., Antibiotic use