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
Which among the following organisms causes Buruli ulcer? 
Select and explain. 
A. M. Marinum, B. M. Ulcerans, C. M. kansasii, D. M. Smegmatis
B: M. Ulcerans
Answer: B: M. Ulcerans 
Explanation: 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