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

Ex Input:
Problem: the length of a rectangular plot is thrice its breadth . if the area of the rectangular plot is 507 sq m , then what is the breadth of the rectangular plot ? 
Options: a ) 16 , b ) 17 , c ) 13 , d ) 19 , e ) 14

Ex Output:
c


Ex Input:
Problem: if the area of a square with sides of length 9 centimeters is equal to the area of a rectangle with a width of 3 centimeters , what is the length of the rectangle , in centimeters ? 
Options: ['a ) 4', 'b ) 27', 'c ) 12', 'd ) 16', 'e ) 18']

Ex Output:
b


Ex Input:
Problem: if the sides of a triangle are 39 cm , 36 cm and 15 cm , what is its area ? 
Options: a ) 120 cm 2 , b ) 765 cm 2 , c ) 216 cm 2 , d ) 270 cm 2 , e ) 275 cm 2

Ex Output:

d