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
Which of the following is a Enrichment broth? 
Select and explain. 
A. Blood agar, B. Loeffler's serum slope, C. Alkaline peptone water, D. Chocolate agar
C: Alkaline peptone water
Answer: C: Alkaline peptone water 
Explanation: Enrichment broth :

Selenite F and Tetrathionate broth for salmonella and shigella.
Alkaline peptone water used for vibrio cholerae.