Task: Question Answering
Input (English): Problem: the ratio between the perimeter and the width of a rectangle is 5 : 1 . if the area of the rectangle is 294 square centimeters , what is the length of the rectangle in centimeters ? 
Options: a ) 19 , b ) 20 , c ) 21 , d ) 22 , e ) 23
Output (English): c