Task: Question Answering
Input (English): Question: A bag has 9 green balls and 23 pink balls. How many green balls should be added to the bag so that the ratio of green balls and pink balls in the bag becomes 1:1?

 Option A: 10

 Option B: 11

 Option C: 12

 Option D: 13

 Option E: 14
Output (English): Option E