Task: Question Answering
Input (English): Problem: the ratio of the volumes of two cubes is 27 : 125 . what is the ratio of their total surface areas ? 
Options: a ) 9 : 25 , b ) 9 : 35 , c ) 81 : 124 , d ) 81 : 126 , e ) 81 : 129
Output (English): a