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': 'Spore rorming anaerobic gram positive bacilli \nSelect and explain. \nA. Bacillus Anthracis, B. Clostridia, C. Corynebacterium, D. Peptostreptococcus', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is. 'b' i. e. Clostridia", 'role': 'assistant'}]