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': 'Malignant pustule is seen in infection with ? \nSelect and explain. \nA. Versinia pestis, B. Bacillus cereus, C. Clostridium welchii, D. Bacillus anthracis', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Bacillus anthracis", 'role': 'assistant'}]