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: Unknown
16-year-old boy had a flea bite while working in a wheat grain godown. After 4 days he developed fever and had axillary lymphadenopathy. The stain used for smear preparation is ? 
Select and explain. 
A. Albert staining, B. Ziehl Neelson staining, C. McFadyean’s staining, D. Wayson staining
D: Wayson staining
Answer: D: Wayson staining 
Explanation: • This is a case of plague—Working in godown (rats commonly found)
• H/o flea bite, In patient 5 days, fever and lymphadenopathy.
• Wayson stain a polychromatic stain-Y. Pestis can be best demonstrated (other is Giemsa)
• Bipolar staining or safety pin appearance seen.
•Albert stain use for C. diptheriae
• Z-N stain use for M. tuberculosis and other acid fast bacteria
• Mc Fayden reaction used for B. anthracis