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': 'Fungi that posses a capsule is \nSelect and explain. \nA. Candida, B. Aspergillus, C. Cryptococcus, D. Mucor', 'role': 'user'}, {'content': 'Answer: C \nExplanation: The capsule of Cryptococcus can be demonstrated by Indian ink or nigrosin stain. capsules are prominent in Indian ink preparation. There are 4 serological types of capsular polysaccharide, it can be demonstrated by precipitation test. All others do not have capsules. Ref: Textbook of Microbiology, Ananthanarayan and Paniker; 9th edition', 'role': 'assistant'}]