instruction:
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'.
question:
Problem: a train 280 m long , running with a speed of 72 km / hr will pass a tree in 
Options: a ) 14 sec , b ) 15 sec , c ) 16 sec , d ) 20 sec , e ) none
answer:
a


question:
Problem: in a kilometer race , a beats b by 40 meters or 10 seconds . what time does a take to complete the race ? 
Options: a ) 290 sec , b ) 190 sec , c ) 199 sec , d ) 192 sec , e ) 240 sec
answer:
e


question:
Problem: what is the speed of the stream if a canoe rows upstream at 6 km / hr and downstream at 10 km / hr 
Options: a ) 1 kmph , b ) 4 kmph , c ) 3 kmph , d ) 2 kmph , e ) 1.9 kmph
answer:

d