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': 'Indicator used in Macconkey medium \nSelect and explain. \nA. Methyl violet, B. Gentian violet, C. Neutral red, D. Carbol fuschin', 'role': 'user'}, {'content': "Answer: C \nExplanation: Macconkey's medium contains peptone, Lactose, agar, neutral red and taurocholate.", 'role': 'assistant'}]