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': 'Eschar is formed by which of the following organism ? \nSelect and explain. \nA. B. Henslae, B. B. Anthracis, C. Staph aureus, D. E. coli', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., B. AnthracisCutaneous anthrax is also called malignant pustule. The lesion stas as macule then typically progress through papular and vesicular or pustular stages to the formation of an ulcer with a blackened necrotic eschar.", 'role': 'assistant'}]