Task: Question Answering
Input (English): Problem: a rectangular field is to be fenced on three sides leaving a side of 20 feet uncovered . if the area of the field is 390 sq . feet , how many feet of fencing will be required ? 
Options: ['a ) 34', 'b ) 59', 'c ) 68', 'd ) 88', 'e ) 92']
Output (English): b