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
Bacteria used in Griffith's experiment is 
Select and explain. 
A. Pneumococci, B. Neisseria, C. Acinetobacter, D. Pseudomonas
A: Pneumococci
Answer: A: Pneumococci 
Explanation: Griffith's experiment is done on mice using pneumoccal strains.