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 train 120 m long running at 60 kmph crosses a platform in 20 sec . what is the length of the platform ? 
Options: a ) 213 , b ) 298 , c ) 350 , d ) 726 , e ) 267

Output: a


Input: Consider Input: Problem: a train 150 m long crosses a platform 130 m long in 20 sec ; find the speed of the train ? 
Options: a ) 50 , b ) 60 , c ) 55 , d ) 45 , e ) 53

Output: a


Input: Consider Input: Problem: how many plants will be there in a circular bed whose outer edge measure 30 cms , allowing 4 cm 2 for each plant ? 
Options: a ) 18 , b ) 750 , c ) 24 , d ) 120 , e ) none of these


Output: a