Task: Question Answering
Input (English): Question: Sandy gets 3 marks for each correct sum and loses 2 marks for each incorrect sum. Sandy attempts 30 sums and obtains 55 marks. How many sums did Sandy get correct?

 Option A: 19

 Option B: 21

 Option C: 23

 Option D: 25

 Option E: 27
Output (English): Option C