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: if a tire rotates at 400 revolutions per minute when the car is traveling 72 km / h , what is the circumference of the tire ? 
Options: a ) 7 meters , b ) 9 meters , c ) 8 meters , d ) 5 meters , e ) 3 meters

Output: e


Input: Consider Input: Problem: a train 250 m long is running at a speed of 45 km / hr . in what time will it pass a bridge 150 m long ? 
Options: a ) 45 sec , b ) 42 sec , c ) 32 sec , d ) 48 sec , e ) 25 sec

Output: c


Input: Consider Input: Problem: a and b can do a piece of work in 9 days . with the help of c they finish the work in 6 days . c alone can do that piece of work in ? 
Options: a ) 33 , b ) 878 , c ) 18 , d ) 88 , e ) 11


Output: c