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
Recommended transport medium for stool specimen suspected to contain enteric pathogens is -a) Arnie's medium b) Buffered glycerol saline mediumc) MacConkey mediumd) Stuart's medium 
Select and explain. 
A. bd, B. d, C. ab, D. ac
A: bd
Answer: A: bd 
Explanation: Recommended transport medium for stool specimen is:

Buffered glycerol saline medium (when Salmonella or Shigella is suspected)
VR medium-(when Vibrio cholerae is suspected).