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 maximum number r of 27 cubic centimetre cubes that can fit in a rectangular box measuring 8 centimetre x 9 centimetre x 12 centimetre ? 
Options: ['a ) 36', 'b ) 32', 'c ) 24', 'd ) 21', 'e ) 15']

Ex Output:
c


Ex Input:
Problem: a semicircle has a radius of 9 . what is the approximate perimeter of the semicircle ? 
Options: a ) 16 , b ) 25 , c ) 33 , d ) 46 , e ) 58

Ex Output:
d


Ex Input:
Problem: a 25 cm wide path is to be made around a circular garden having a diameter of 4 meters . approximate area of the path is square meters is 
Options: ['a ) 3.34', 'b ) 3.36', 'c ) 3.34', 'd ) 6.32', 'e ) 3.31']

Ex Output:

a