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
Which of the following is false about Psuedomembranous colitis 
Select and explain. 
A. Occurs due antibiotics use, B. Caused by Clostridium difficile, C. Treatment is oral vancomycin, D. None of the above
D: None of the above
Answer: D: None of the above 
Explanation: None