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': "Mac Conkey's Agar is - \nSelect and explain. \nA. Enriched medium, B. Enrichment medium, C. Differential medium, D. Synthetic medium", 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Differential medium", 'role': 'assistant'}]