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'.

[Q]: Problem: in a 200 meter race a beats b by 35 meters in 7 seconds . a ' s time over the cause is ? 
Options: a ) 47 sec , b ) 40 sec , c ) 45 sec , d ) 33 sec , e ) 35 sec
[A]: d


[Q]: Problem: rahul travels from a to b a distance of 200 miles in 5 hours . he returns to a in 4 hours . find his average speed ? 
Options: a ) 52.2 mph , b ) 61.9 mph , c ) 44.4 mph , d ) 35.7 mph , e ) 65.6 mph
[A]: c


[Q]: Problem: a and b can do a piece of work in 10 days . with the help of c they finish the work in 3 days . c alone can do that piece of work in ? 
Options: a ) 15.5 days , b ) 4.3 days , c ) 17.5 days , d ) 16.5 days , e ) 18.5 days
[A]:
b