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
Negative staining is used to demonstrate 
Select and explain. 
A. Bacterial spore, B. Bacterial flagella, C. Bacterial capsule, D. Bacterial fimbriae
C: Bacterial capsule
Answer: C: Bacterial capsule 
Explanation: None