Task: Question Answering
Input (English): Problem: if the length of a rectangular field is 30 metres more than its breadth and the perimeter of the field is 540 metres , what is the area of the field in square metres ? 
Options: ['a ) 18000', 'b ) 40000', 'c ) 31000', 'd ) 19000', 'e ) 16000']
Output (English): a