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
Latex agglutination study of the antigen in CSF helps in the diagnosis of 
Select and explain. 
A. Cryptococcus, B. Candidiasis, C. Aspergillosis, D. Histoplasmosis
A: Cryptococcus
Answer: A: Cryptococcus 
Explanation: Latex agglutination test - cryptococcal capsular polysaccharide antigen can be detected in CSF, serum or urine by latex agglutination test. Ref: Textbook of Microbiology, Ananthanarayan and Paniker; 9th edition