Task: Question Answering
Input (English): Problem: how much space , in cubic units , is left vacant when maximum number of 4 x 4 x 4 cubes are fitted in a rectangular box measuring 10 x 12 x 16 ? 
Options: ['a ) 0', 'b ) 36', 'c ) 180', 'd ) 216', 'e ) 384']
Output (English): e