This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: general microbiology, Subject name: Microbiology
Composition of ZN stain is all Except 
Select and explain. 
A. Basic fuschin, B. Acid fuschin, C. Phenol, D. Alcohol
A: Basic fuschin
Answer: A: Basic fuschin 
Explanation: Primary stain : 0.3% Carbol Fuchsin - Dissolve 50g phenol in 100ml ethanol (90%) or methanol(95%). Dissolve 3g basic fuchsin in the mixture and add distilled water to bring the volume to 1 L. Counter stain : 0.3% methylene blue or malachite green Ref ananthnarayana and panikers microbiology textbook 8/e