Task: Question Answering
Input (English): Question: How many paying stones, each measuring 2 1/2 m * 2 m are required to pave a rectangular court yard 30 m long and 16 1/2 m board?

 Option A: 99

 Option B: 86

 Option C: 21

 Option D: 26

 Option E: 11
Output (English): Option A