Task: Question Answering
Input (English): Question: In an examination a pupil's average marks were 63 per paper. If he had obtained 18 more marks for his Geography paper and 2 more marks for his History paper, his average per paper would have been 65. How many papers were there in the examination?

 Option A: 8

 Option B: 9

 Option C: 10

 Option D: 11

 Option E: 12
Output (English): Option C