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'.

Input: Consider Input: Problem: a car takes 6 hours to cover a distance of 504 km . how much should the speed in kmph be maintained to cover the same direction in 3 / 2 th of the previous time ?
Options: a ) 48 kmph , b ) 50 kmph , c ) 52 kmph , d ) 56 kmph , e ) 60 kmph

Output: d

Input: Consider Input: Problem: jim drove 768 miles of a 1200 miles journey . how many more miles does he need to drive to finish his journey ?
Options: a ) 432 miles , b ) 651 miles , c ) 387 miles , d ) 954 miles , e ) 556 miles

Output: a

Input: Consider Input: Problem: a and b undertake to do a piece of work for $ 500 . a alone can do it in 5 days while b alone can do it in 10 days . with the help of c , they finish it in 2 days . find the share of c ?
Options: a ) $ 200 , b ) $ 150 , c ) $ 300 , d ) $ 25 , e ) $ 100
Output: a