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': "'Stalacite' growth is a feature of: \nSelect and explain. \nA. Haemophilus, B. Yersenia, C. Corynebacterium, D. Mycoplasma", 'role': 'user'}, {'content': 'Answer: B \nExplanation: Yersenia', 'role': 'assistant'}]