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 man ' s regular pay is $ 3 per hour up to 40 hours . overtime is twice the payment for regular time . if he was paid $ 186 , how many hours overtime did he work ? 
Options: a ) 8 , b ) 5 , c ) 9 , d ) 6 , e ) 11

Ex Output:
e


Ex Input:
Problem: excluding stoppages , the speed of a train is 30 kmph and including stoppages it is 21 kmph . of how many minutes does the train stop per hour ? 
Options: a ) 16 , b ) 17 , c ) 12 , d ) 15 , e ) 18

Ex Output:
e


Ex Input:
Problem: in a kilometer race , a beats b by 80 meters or 8 seconds . what time does a take to complete the race ? 
Options: a ) 77 sec , b ) 92 sec , c ) 67 sec , d ) 16 sec , e ) 76 sec

Ex Output:

b