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 dimensions of a room are 25 feet * 15 feet * 12 feet . what is the cost of white washing the four walls of the room at rs . 4 per square feet if there is one door of dimensions 6 feet * 3 feet and three windows of dimensions 4 feet * 3 feet each ? 
Options: a ) 4000 , b ) 3624 , c ) 5673 , d ) 4530 , e ) 4566

Ex Output:
b


Ex Input:
Problem: if the sides of a cube are in the ratio 4 : 3 . what is the ratio of their diagonals ? 
Options: a ) 4 : 3 , b ) 4 : 8 , c ) 4 : 1 , d ) 4 : 2 , e ) 4 : 7

Ex Output:
a


Ex Input:
Problem: find the smallest number which should be multiplied with 1152 to make it a perfect square . 
Options: ['a ) 2', 'b ) 1', 'c ) 3', 'd ) 5', 'e ) 6']

Ex Output:

a