Task: Question Answering
Input (English): Question: The length of the side of square A is twice the length of the side of square B. What is the ratio of the area of square A to the area of square B?

 Option A: 4:1

 Option B: 1:1

 Option C: 2:1

 Option D: 1:2

 Option E: 1:21
Output (English): Option A