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': "Corynebacterium diphtheriae can be grown within 6-8 hour on - \nSelect and explain. \nA. Potassium tellurite media with iron, B. MacConkey's agar, C. Dorset egg medium, D. Loeffler's serum slope", 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]