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
Gram-stained periorbital exudates in severe panophthalmitis with cellulitis in an elderly diabetic shows irregular branching aseptate and broad hyphae. Which of the following is the most likely diagnosis- 
Select and explain. 
A. Candida, B. Aspergillus, C. Pencillium, D. Apophysomyces species
D: Apophysomyces species
Answer: D: Apophysomyces species 
Explanation: Here, the organism is having aseptate hyphae (not septate).
Branching aseptate hyphae suggests the diagnosis of mucormycosis (mucor infection).
Apophysomyces is a novel pathogen belonging to the family Mucoraceae.