This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
A diabetic patient presents with pus from eye. Colonies of isolated organisms are black with microscopic feature of non-septate hyphae and obtuse branching. Diagnosis is ? 
Select and explain. 
A. Aspergillosis, B. Candidiasis, C. Mucormycosis, D. Histoplasmosis
C: Mucormycosis
Answer: C: Mucormycosis 
Explanation: Ans. is 'c' i.e., Mucormycosis Information in this question are : i) Patient is diabetic ii) Orbital mycosis iii) Non-septate hyphae with obtuse branching (seen in rhizopus and mucor). All these suggest the diagnosis of mucormycosis, most common organism being rhizopus.