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
Pleomorphism is most commonly seen in: 
Select and explain. 
A. Anaerobic staphylococci, B. H. influenzae, C. Corynebacterium diphtheria, D. Brucella abous
B: H. influenzae
Answer: B: H. influenzae 
Explanation: H. influenzae