Task: Question Answering
Input (English): Question: A and B enter into partnership with capital as 7:9. At the end of 8 months, A withdraws. If they receive the profits in the ratio of 8:9 find how long B's capital was used?

 Option A: 5

 Option B: 4

 Option C: 6

 Option D: 7

 Option E: 9
Output (English): Option D