Task: Question Answering
Input (English): Question: subash can copy 50 pages in 10 hrs.subash and prakash together can copy 300 pages in 40 hours.in how much time prakash can copy 10 pages.

 Option A: 8

 Option B: 10

 Option C: 12

 Option D: 4

 Option E: 16
Output (English): Option D