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 - \nSelect and explain. \nA. Anthrax ulcer, B. Proliferating rodent ulcer, C. Malignant melanoma, D. Marjolin's ulcer", 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is `a' i.e., Anthrax ulcer Cutaneous 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'}]