This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Culture media and method, Subject name: Microbiology
Differential media is - 
Select and explain. 
A. Nutrient agar, B. Chocolate agar, C. MacConkey's agar, D. Tetrathionate broth
C: MacConkey's agar
Answer: C: MacConkey's agar 
Explanation: Ans. is 'c' i.e., MacConkey's agar Differential mediao A medium has substances which bring out different characteristics of bacteria and thus helping to distinguish between them.o Example - MacConkey's medium.Remembero MacConkey's medium acts both as indicator and differential media.