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: Anatomy
[{'content': 'Sudha ache 20 year old female developed antibiotic associated pseudomembranous colitis caused by Clostridium difficle. Which 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 6/799 Drugs used for the treatment of pseudomembranous colitis are Metronidazole (drug of choice) Vancomycin', 'role': 'assistant'}]