This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Other topics and Adverse effects, Subject name: Pharmacology
[{'content': 'Sudha, a lot 20 year old female developed antibiotic associated pseudomembranous colotis caused by Costridium difficile. Whinch of the following drugs is most likely to be effective in the treatment of this disease? \nSelect and explain. \nA. Ampicillin, B. Clindamycin, C. Metronidazole, D. Chloramphenicol', 'role': 'user'}, {'content': 'Answer: C \nExplanation: (Ref: KDT 6/e p791) Drugs used for the treatment of psudoembranours colitis are Metronidzole (Drug of choice) Vancomycin', 'role': 'assistant'}]