This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacterial Infection of Skin, Subject name: Skin
[{'content': 'Which among the following organisms causes Buruli ulcer? \nSelect and explain. \nA. M. Marinum, B. M. Ulcerans, C. M. kansasii, D. M. Smegmatis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. B. M. UlceransM. Ulcerans causes Buruli ulcer.* It starts as a nodule or papule which progresses further to form a shallow necrotic ulcer.* Children (5-15 years old) have the highest incidence of Buruli ulcers, with most lesions on the lower extremities.Image: Extensive Buruli ulcer', 'role': 'assistant'}]