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': 'Robe Koch assistant advised him to use agar instead of gelatine culture media for cultivation of bacteria as: \nSelect and explain. \nA. Agar has more nutrition, B. Gelatin melts at 27degC, C. Gelatin is not easily available, D. Agar is cheaper', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. (b) Gelatin melts at 27degC', 'role': 'assistant'}]