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'.

Input: Consider Input: Problem: a train 441 m long can cross an electric pole in 21 sec and then find the speed of the train ? 
Options: a ) 88 kmph , b ) 89 kmph , c ) 76 kmph , d ) 16 kmph , e ) 18 kmph

Output: c


Input: Consider Input: Problem: what is the length of a bridge ( in meters ) , which a train 156 meters long and travelling at 45 km / h can cross in 30 seconds ? 
Options: a ) 203 , b ) 211 , c ) 219 , d ) 227 , e ) 235

Output: c


Input: Consider Input: Problem: 5 people can write 25 book in 20 days working 8 hour a day . then in how many day 125 can be written by 75 people ? 
Options: a ) 25 / 3 , b ) 19 / 3 , c ) 20 / 3 , d ) 25 / 3 , e ) 22 / 3


Output: c