Task: Question Answering
Input (English): Question: A fill pipe can fill 1/2 of cistern in 35 minutes. In how many minutes, it can fill 1/2 of the cistern?

 Option A: 20 min

 Option B: 25 min

 Option C: 30 min

 Option D: 35 min

 Option E: 40 min
Output (English): Option D