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
[{'content': 'Chinese letter configuration is seen in ? \nSelect and explain. \nA. Cl tetani, B. Cl perfringens, C. Strept salivarius, D. C diphtheriae', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e. C diphtheriae C. diphtheriae is gram positive, non motile, nonsporing, noncapsulated. Babes Ernest or volutin granules Also known as metachromatic granules or polar bodies. Composed of polymetaphosphate. Usually stained with Loeffler's methylene blue. Special stains for demonstration are Albe's, Neisser 's and Ponder 's.", 'role': 'assistant'}]