Task: Question Answering
Input (English): Problem: the ratio of radius of a circle and the side of a square is 2 : 13 . find the ratio of their areas : 
Options: ['a ) 2 : 1', 'b ) 4 : 7', 'c ) 8 : 77', 'd ) 4 : 169', 'e ) none']
Output (English): d