Task: Question Answering
Input (English): Problem: the diagonals of the two squares are in the ratio of 7 : 9 find the ratio of their area 
Options: ['a ) 78 : 89', 'b ) 5 : 48', 'c ) 49 : 81', 'd ) 74 : 36', 'e ) 25 : 49']
Output (English): c