This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: mycology, Subject name: Microbiology
A 25 years old renal transplant recipient died of meningitis. On autopsy, gelatinous exudates with cystic masses were seen and a round, encapsulated organism was isolated. Which is the best stain for diagnosis 
Select and explain. 
A. Mucicarmine, B. Aliciane blue, C. Giemsa, D. Prussian blue
A: Mucicarmine
Answer: A: Mucicarmine 
Explanation: Cryptococcal meningitis - the disease is usually seen in an immunocompromised host. It occurs by haematogenous route. A spherical budding cell having a prominent polysaccharide capsule which may be demonstrated by Indian ink. Histopathological examination of tissue can be done by staining with mucicarmine stain, H&E and PAS. Ref: Baveja textbook of microbiology; 4th edition.