Task: Question Answering
Input (English): Question: If 1/2 of the air in a tank is removed with each stroke of a vacuum pump, what fraction of the original amount of air has been removed after 5 strokes ?

 Option A: 31/32

 Option B: 7/8

 Option C: 1/4

 Option D: 1/8

 Option E: 1/16
Output (English): Option A