Task: Question Answering
Input (English): Question: Two persons A and B can complete a piece of work in 30 days and 45 days respectively. If they work together, what part of the work will be completed in 7 days?

 Option A: 2/5

 Option B: 7/18

 Option C: 1/4

 Option D: 1/9

 Option E: 2/6
Output (English): Option B