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: find the area of trapezium whose parallel sides are 20 cm and 18 cm long , and the distance between them is 10 cm . 
Options: a ) 287 cm 2 , b ) 190 cm 2 , c ) 180 cm 2 , d ) 785 cm 2 , e ) 295 cm 2

Output: b


Input: Consider Input: Problem: a prison of 10,000 inmates has enough food to feed them all for 50 days . after 10 days some of the inmates leave and the food is now enough for the same period of 50 days as before . how many of them left ? 
Options: a ) 3,000 , b ) 2,200 , c ) 2,000 , d ) 1,000 , e ) 200

Output: c


Input: Consider Input: Problem: a train 160 m long is running at 30 kmph . in how much time will it pass a platform 120 m long ? 
Options: a ) 15.89 seconds , b ) 24.36 seconds , c ) 15.96 seconds , d ) 14.93 seconds , e ) 22.23 seconds


Output: d