This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Paranasal Sinuses, Subject name: ENT
Which of the following is the most common etiological agent in paranasal sinus mycosis? 
Select and explain. 
A. Aspergillus species, B. Histoplasma, C. Conidiobolus coronatus, D. Candida albicans
A: Aspergillus species
Answer: A: Aspergillus species 
Explanation: (a) Aspergillus species(Ref. Cummings, 6th ed., 732)The most common etiological agent in paranasal sinus mycosis is Aspergillus fumigatus.