In this task, you need to answer the given multiple-choice question on geometry. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.

Example Input: Problem: if the area of a square with sides of length 11 centimeters is equal to the area of a rectangle with a width of 11 centimeters , what is the length of the rectangle , in centimeters ? 
Options: a ) 4 , b ) 8 , c ) 11 , d ) 16 , e ) 18
Example Output: c

Example Input: Problem: if the radius of a circle is increased by 40 % then the area is increased by : 
Options: a ) 44 % , b ) 120 % , c ) 96 % , d ) 40 % , e ) none of the above
Example Output: c

Example Input: Problem: the area of an isosceles trapezoid with sides of length 5 and bases of length 11 and 17 is ? 
Options: a ) 48 , b ) 52 , c ) 54 , d ) 56 , e ) 46
Example Output:
d