<prompt> True regarding pseudomembranous colitis are all except:It is caused by Clostridium difficileThe organism is a normal commensal of gutIt is due to production of phospholipase AIt is treated by vancomycin  <response>: Cl. difficile cause pseudomembranous colitis PMC due to the production of toxin A enterotoxin and toxin B cytotoxin, not phospholipase A.Toxin A is a potent neutrophil chemoattractant and both toxin A and B glucosylate the GTP binding protein of Rho subfamily resulting in disruption of cytoskeleton causing loss of cell shape adherence with consequent fluid leakage.Asymptomatic fecal carriage of Cl. difficile in healthy neonates is very common. It also colonizes the colon of 3 of healthy adults.CMDT 08, p 543For Cl. difficile associated diarrhea CDAD, three events are essential: 