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: what is the area of a square field whose sides have a length of 16 meters ? 
Options: a ) 225 sq m , b ) 286 sq m , c ) 298 sq m , d ) 256 sq m , e ) 231 sq m

Ex Output:
d


Ex Input:
Problem: a metallic sheet is of rectangular shape with dimensions 50 m x 36 m . from each of its corners , a square is cut off so as to make an open box . if the length of the square is 8 m , the volume of the box ( in m 3 ) is : 
Options: a ) 5440 , b ) 5120 , c ) 6420 , d ) 7500 , e ) 8960

Ex Output:
a


Ex Input:
Problem: 50 square stone slabs of equal size were needed to cover a floor area of 98 sq . m . find the length of each stone slab ? 
Options: a ) 140 cm , b ) 767 cm , c ) 88 cm , d ) 666 cm , e ) 776 cm

Ex Output:

a