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

Ex Input:
Problem: a pipe can fill a cistern in 33 minutes . find the time in which 1 / 11 part of the cistern will be filled ? 
Options: a ) 5 min , b ) 2 min , c ) 3 min , d ) 1 min , e ) 10 min

Ex Output:
c


Ex Input:
Problem: if the perimeter of a rectangular garden is 1800 m , its length when its breadth is 400 m is ? 
Options: a ) 500 , b ) 600 , c ) 700 , d ) 800 , e ) 900

Ex Output:
a


Ex Input:
Problem: two numbers n and 14 have lcm = 56 and gcf = 12 . find n . 
Options: a ) 48 , b ) 34 , c ) 44 , d ) 54 , e ) 64

Ex Output:

a