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 cargo ships engines failed 100 miles away from the port . due to the changing wind direction , it is moving 12 miles towards the port and 6 miles away from the port . if the wind pattern remains same , how many miles it will travel before reaching the port ? 
Options: a ) a - 179 , b ) b - 240 , c ) c - 280 , d ) d - 100 , e ) e - 155

Ex Output:
c


Ex Input:
Problem: if 12 men and 16 boys can do a piece of work in 7 days and 13 men together will 24 boys can do it in 4 days . compare the daily work done by a man with that of a boy . 
Options: a ) 1 : 4 , b ) 1 : 2 , c ) 1 : 3 , d ) 2 : 1 , e ) 4 : 1

Ex Output:
b


Ex Input:
Problem: 20 men can cut 30 trees in 4 hours . if 4 men leave the job , how many trees will be cut in 6 hours ? 
Options: a ) 24 , b ) 36 , c ) 48 , d ) 22 , e ) 32

Ex Output:

b