Task: Question Answering
Input (English): Problem: a crate measures 7 feet by 8 feet by 12 feet on the inside . a stone pillar in the shape of a right circular cylinder must fit into the crate for shipping so that it rests upright when the crate sits on at least one of its six sides . what is the radius , in feet , of the pillar with the largest volume that could still fit in the crate ? 
Options: ['a ) 2', 'b ) 4', 'c ) 6', 'd ) 7', 'e ) 12']
Output (English): d