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
[{'content': '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 \nSelect and explain. \nA. Mucicarmine, B. Aliciane blue, C. Giemsa, D. Prussian blue', 'role': 'user'}, {'content': 'Answer: A \nExplanation: 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.', 'role': 'assistant'}]