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'.

[Q]: Problem: a man is standing on a railway bridge which is 180 m long . he finds that a train crosses the bridge in 20 seconds but himself in 8 seconds . find the length of the train and its speed 
Options: a ) 50 km , b ) 52 km , c ) 54 km , d ) 56 km , e ) 58 km
[A]: c


[Q]: Problem: the radius of a circular wheel is 1.75 m , how many revolutions will it make in traveling 1 km ? 
Options: ['a ) 1000', 'b ) 2788', 'c ) 2677', 'd ) 2899', 'e ) 2771']
[A]: a


[Q]: Problem: a pipe takes a hours to fill the tank . but because of a leakage it took 7 times of its original time . find the time taken by the leakage to empty the tank 
Options: a ) 50 min , b ) 60 min , c ) 90 min , d ) 80 min , e ) 70 min
[A]:
e