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 Q]: Problem: the speed of a train is 120 kmph . what is the distance covered by it in 40 minutes ? 
Options: a ) 50 kmph , b ) 60 kmph , c ) 70 kmph , d ) 80 kmph , e ) 85 kmph
[EX A]: d

[EX Q]: Problem: a train 140 m long is running with a speed of 50 km / hr . in what time will it pass a man who is running at 4 km / hr in the direction opposite to that in which the train is going ? 
Options: a ) 8.1 , b ) 7.0 , c ) 9.33 , d ) 8 , e ) 9
[EX A]: c

[EX Q]: Problem: the h . c . f . of two numbers is 11 and their l . c . m . is 693 . if one of the numbers is 77 , find the other . 
Options: a ) 99 , b ) 97 , c ) 95 , d ) 91 , e ) 96
[EX A]:
a