This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Systemic Bacteriology (Gram Positive Bacilli, Gram Negative Bacilli), Subject name: Microbiology
Vi Phage typing is done for- 
Select and explain. 
A. Salmonella, B. Streptococcus, C. Shigella, D. Pseudomonas
A: Salmonella
Answer: A: Salmonella 
Explanation: 'Vi' phage typing is done for salmonella Phage typing is also done for - Vibrio cholerae Staphylococcus aureus Salmonella typhi Brucella C.Diphtheria Pseudomonas- morphotyping is done