This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nose and paranasal sinuses, Subject name: ENT
[{'content': 'Which of the following is the most common etiological agent in parNasal sinus mycoses: \nSelect and explain. \nA. Aspergillus, B. Histoplasma, C. Conidiobolus coronatus, D. Candida albicans', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Most common type of fungal infection of nose and paranasal sinuses are due to aspergillus. A.fumigatus>A.niger>A.flavus are the most frequent offenders. Ref Maqbool 11/e,p 255.', 'role': 'assistant'}]