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: how long does a train 165 meters long running at the rate of 54 kmph take to cross a bridge 660 meters in length ? 
Options: a ) 55 sec , b ) 40 sec , c ) 45 sec , d ) 30 sec , e ) 35 sec
answer:
a


question:
Problem: the sector of a circle has radius of 21 cm and central angle 180 o . find its perimeter ? 
Options: a ) 91.5 , b ) 92 , c ) 108 , d ) 94 , e ) 95
answer:
c


question:
Problem: a train running at the speed of 70 km / hr crosses a pole in 9 sec . what is the length of the train ? 
Options: a ) 227 m , b ) 150 m , c ) 167 m , d ) 175 m , e ) 187 m
answer:

d