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'.

Ex Input:
Problem: a cistern 4 meters long and 4 meters wide contains water up to a depth of 1 meter 25 cm . what is the total area of the wet surface ? 
Options: a ) 28 , b ) 32 , c ) 36 , d ) 40 , e ) 44

Ex Output:
c


Ex Input:
Problem: if teena is driving at 55 miles per hour and is currently 7.5 miles behind loe , who is driving at 40 miles per hour in the same direction then in how many minutes will teena be 15 miles ahead of loe ? 
Options: a ) 15 , b ) 60 , c ) 75 , d ) 90 , e ) 105

Ex Output:
d


Ex Input:
Problem: a train 350 m long , running with a speed of 63 km / hr will pass a tree in ? 
Options: a ) 22 sec , b ) 16 sec , c ) 17 sec , d ) 88 sec , e ) 20 sec

Ex Output:

e