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
Cefoxitin - cycloserine fructose agar is used for ? 
Select and explain. 
A. Neisseria, B. Clostridium difficle, C. Bacillus anttacis, D. Reiter's treponema
B: Clostridium difficle
Answer: B: Clostridium difficle 
Explanation: Ans. is 'b' i.e., Clostridium difficle Cefoxitin - cycloserine fructose agar (CCFA) is an enriched selective and differential medium recommended for the isolation and cultivation of clostridium difficle from fecal specimens.