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
True regarding pseudomembranous colitis are all except- 
Select and explain. 
A. It is caused by clostridium difficile, B. The organism is a normal commensal of gut, C. It is due to production of phospholipase A, D. It is treated by vancomycin
C: It is due to production of phospholipase A
Answer: C: It is due to production of phospholipase A 
Explanation: None