Task: Question Answering
Input (English): Problem: the sides of a cube are in the ratio 1 : 2 the ratio of their volume is ? 
Options: ['a ) 1 : 6', 'b ) 1 : 4', 'c ) 1 : 0', 'd ) 1 : 2', 'e ) 1 : 1']
Output (English): b