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
[{'content': 'Which of the following is the most common etiological agent in paranasal sinus mycosis? \nSelect and explain. \nA. Aspergillus species, B. Histoplasma, C. Conidiobolus coronatus, D. Candida albicans', 'role': 'user'}, {'content': 'Answer: A \nExplanation: (a) Aspergillus species(Ref. Cummings, 6th ed., 732)The most common etiological agent in paranasal sinus mycosis is Aspergillus fumigatus.', 'role': 'assistant'}]