Task: Question Answering
Input (English): Problem: the diagonals of two squares are in the ratio of 2 : 5 . find the ratio of their areas . 
Options: ['a ) 4 : 25', 'b ) 4 : 15', 'c ) 3 : 25', 'd ) 3 : 15', 'e ) none of these']
Output (English): a