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: Dental
"Fish tank granuloma " is caused by 
Select and explain. 
A. Mycobacterium.leprae, B. Mycobacterium.marinum, C. Mycobacterium.asiaticum, D. Mycobacterium.ulcerans
B: Mycobacterium.marinum
Answer: B: Mycobacterium.marinum 
Explanation: It is an atypical mycobacterial infection commonly seen in fish handlers or swimmers.Minocycline is the drug of choice.