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 of the following is the most common etiological agent in paranasal sinus mycosis 
Select and explain. 
A. Aspergillus fumigatus, B. Histoplasma, C. Conidiobolus coronatus, D. Candida albicans
A: Aspergillus fumigatus
Answer: A: Aspergillus fumigatus 
Explanation: Aspergillus is caused by the inhalation of aspergillus conidia or mycelial fragments resulting in respiratory diseases, disseminated aspergillosis in brain, kidney and hea. And superficial infection like sinusitis, otomycosis and mycotic keratitis. sinusitis is caused by A.fumigatus and A.flavus. Ref: Textbook of Microbiology, Ananthanarayan and Paniker; 9th edition