system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Sudha, a 20 year old female developed antibiotic associated pseudomembranous colitis caused by Clostridium difficile. Which of the following drugs is most likely to be effective in the treatment of this disease ?
assistant
The correct answer is  None