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: a car travels at a speed of 12 miles per hour . how far will it travel in 5 hours ? 
Options: a ) 50 miles , b ) 60 miles , c ) 72 miles , d ) 22 miles , e ) 62 miles
[EX A]: b

[EX Q]: Problem: a train 140 meters long takes 6 seconds to cross a man walking at 5 kmph in the direction opposite to that of the train . find the speed of the train . 
Options: a ) 45 kmph , b ) 50 kmph , c ) 55 kmph , d ) 60 kmph , e ) 79 kmph
[EX A]: e

[EX Q]: Problem: in a 100 m race , a covers the distance in 30 seconds and b in 45 second . in this race a beats b by : 
Options: a ) 33.33 m , b ) 25 m , c ) 45 m , d ) 30 m , e ) none of these
[EX A]:
a