This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ear, Subject name: ENT
[{'content': 'Most common fungus causing otomycosis is \nSelect and explain. \nA. Histoplasma, B. Candida, C. Mucor, D. Penicillin', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Otomycosis is a fungal infection of the ear canal most commonly caused by Candida albicans, Aspergillus niger and Aspergillus fumigatus. (Ref: Textbook of diseases of ENT, PL Dhingra, 7th edition, of no. 55)', 'role': 'assistant'}]