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: if the sides of a triangle are 30 cm , 28 cm and 12 cm , what is its area ? 
Options: a ) 120 cm 2 , b ) 112 cm 2 , c ) 776 cm 2 , d ) 666 cm 2 , e ) 168 cm 2

Ex Output:
e


Ex Input:
Problem: the length of rectangle is thrice its breadth and its perimeter is 72 m , find the area of the rectangle ? 
Options: a ) 432 , b ) 212 , c ) 243 , d ) 992 , e ) 212

Ex Output:
c


Ex Input:
Problem: the length of a rectangle is doubled while its width is doubled . what is the % change in area ? 
Options: a ) 250 % , b ) 300 % , c ) 500 % , d ) 650 % , e ) 700 %

Ex Output:

b