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: convert 500 miles to km ? 
Options: a ) 600 km , b ) 700 km , c ) 800 km , d ) 900 km , e ) 1000 km
answer:
c


question:
Problem: the speed of a boat in still water in 42 km / hr and the rate of current is 6 km / hr . the distance travelled downstream in 44 minutes is : 
Options: a ) 86.6 km , b ) 46.6 km , c ) 35.2 km , d ) 35.6 km , e ) 26.6 km
answer:
c


question:
Problem: find the cost of fencing around a circular field of diameter 35 m at the rate of rs . 1.50 a meter ? 
Options: a ) 287 , b ) 132 , c ) 156 , d ) 115.5 , e ) 267
answer:

d