Task: Question Answering
Input (English): Problem: a rectangular box of volume v has width , depth and height in the ratio of 2 : 1 : 3 ( in that order ) . what is the height as a function of v ? 
Options: ['a ) ( v / 2 ) ^ ( 1 / 3 )', 'b ) ( 2 v / 6 ) ^ ( 1 / 3 )', 'c ) ( 9 v / 2 ) ^ ( 1 / 3 )', 'd ) ( 4 v / 3 ) ^ ( 1 / 3 )', 'e ) ( 4 v / 2 ) ^ ( 1 / 3 )']
Output (English): c