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: 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
answer:
c


question:
Problem: a train 250 m long running at 72 kmph crosses a platform in 15 sec . what is the length of the platform ? 
Options: a ) 50 m , b ) 200 m , c ) 250 m , d ) 270 m , e ) 300 m
answer:
a


question:
Problem: youseff lives x blocks from his office . it takes him 1 minute per block to walk to work and 20 seconds per block to ride his bike to work . it is takes him exactly 14 minutes more to walk to work than to ride his bike to work , then x equals ? 
Options: a ) 4 , b ) 7 , c ) 10 , d ) 15 , e ) 21
answer:

e