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
Common fungus causing corneal ulcer is 
Select and explain. 
A. Aspergillus, B. Mucor, C. Fusarium, D. Sprothrix
A: Aspergillus
Answer: A: Aspergillus 
Explanation: Aspergillus causes respiratory diseases, disseminated aspergillosis in brain, kidney and hea, and superficial infection like sinusitis, otomycosis and mycotic keratitis. Sporothrix causes sporotrichosis - nodular ulcerative disease of the skin and subcutaneous tissue. Mucor causes pulmonary and gastrointestinal mucormycosis. Ref: Textbook of Microbiology, Ananthanarayan and Paniker; 9th edition