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': 'True about mycobacterium other than tuberculosis- \nSelect and explain. \nA. Causes disseminated infection, B. Occurs in persons with normal immunity, C. Causes decreased efficacy of BCG due to cross immunity, D. Person to person transmission is seen', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]