Task: Question Answering
Input (English): Problem: john builds a square with a side of 12 cm from some wire. if from the same wire, he builds a rectangle with a width of 6 cm, what will be the length of the rectangle ?
Options: ['a. 18 cm', 'b. 19 cm', 'c. 20 cm', 'd. 21 cm', 'e. none']
Output (English): a