This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Diabetes Mellitus, Subject name: Medicine
[{'content': 'Which is the most common oral infection in diabetes mellitus? \nSelect and explain. \nA. Candida, B. Aspergillus, C. Streptococcus, D. Staphylococcus', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Individuals with DM have a greater frequency and severity of infection. It is due to abnormalities in cell-mediated immunity and phagocyte function associated with hyperglycemia, as well as diminished vascularization. Hyperglycemia aids the colonization and growth o f a variety of organisms . Most commonly by Candida and other fungal species.', 'role': 'assistant'}]