This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: AIIMS 2019, Subject name: Microbiology
Mw vaccine is prepared from: 
Select and explain. 
A. Mycobacterium bovis, B. Mycobacterium indicus pranii, C. Mycobacterium welchii, D. Mycobacterium tuberculosis
B: Mycobacterium indicus pranii
Answer: B: Mycobacterium indicus pranii 
Explanation: Mw vaccine is a killed leprosy vaccine developed in India in 2018 using Mycobacterium indicus pranii.