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
Which fungal infection is commonest in neutropenia 
Select and explain. 
A. Candida, B. Histoplasma, C. Aspergillus niger, D. Aspergillus fumigatus
A: Candida
Answer: A: Candida 
Explanation: Candida - chronic mucocutaneous candidiasis is a serious manifestation seen in immunodeficiency states. Candida albicans is the normal inhabitant of skin, GIT, oral and vaginal cavities. Candidiasis is an oppounistic endogenous infection. Ref: Textbook of Microbiology, Ananthanarayan and Paniker; 9th edition .