This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: AIIMS 2019, Subject name: Microbiology
Which of the following exists as yeast at 37deg and hyphae at 25deg? 
Select and explain. 
A. Histoplasma capsulatum, B. Sporothrix globosa, C. Candida albicans, D. Cryptococcus neoformans
A: Histoplasma capsulatum
Answer: A: Histoplasma capsulatum 
Explanation: Dimorphic fungi: They exist as molds (hyphal form) in the environment at ambient temperature (25deg C) and as yeasts in human tissues at body temperature (37deg C). Some medically impoant dimorphic fungi are: Histoplasma capsulatum Blastomyces dermatitidis Coccidioides immitis Paracoccidioides brasiliensis Penicillium marneffei Sporothrix schenckii