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: Medicine
[{'content': 'A 40-year old diabetic patient presents with proptosis of one eye and black eschar over palate. The likely organism is : \nSelect and explain. \nA. Pseudomonas, B. Candida, C. E. coli, D. Mucor', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]