This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteriology, Subject name: Microbiology
A 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. Albe 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 is seen. Albe stain use for C. diphtheria Z-N stain use for M. tuberculosis and other acid-fast bacteria Mc Fayden reaction used for B. anthracis Ref : Ananthanarayana textbook of Microbiology 9th edition Pgno : 320