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
All are capsulated bacteria except- 
Select and explain. 
A. Neisseria meningitidis, B. Corynebacterium diphtheriae, C. Haemophilus, D. Streptococcus salivarius
B: Corynebacterium diphtheriae
Answer: B: Corynebacterium diphtheriae 
Explanation: None