This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
Otomycosis is caused by 
Select and explain. 
A. Aspergillus niger, B. Histoplasma capsulatum, C. Rhinosporidium seeberi, D. Cryptococcus neoformans
A: Aspergillus niger
Answer: A: Aspergillus niger 
Explanation: None