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
E. coli gives pink colour with - 
Select and explain. 
A. Chocolate agar, B. L.J. medium, C. MacConkey's medium, D. Saline broth
C: MacConkey's medium
Answer: C: MacConkey's medium 
Explanation: None