Task: Question Answering
Input (English): Question: If 35 people play hockey and 10 people play both football and hockey and if 10 people play hockey and cricket and 5 people play all three games then the number of people playing hockey alone is?

 Option A: 10

 Option B: 15

 Option C: 20

 Option D: 25

 Option E: 30
Output (English): Option C