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
Strain of V. cholerae in Bengal ? 
Select and explain. 
A. 0:37, B. 0.096527778, C. 0:17, D. 0:40
B: 0.096527778
Answer: B: 0.096527778 
Explanation: Ans. is 'b' i.e., 0.139