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: the radius of the wheel of a bus is 70 cms and the speed of the bus is 66 km / h , then the r . p . m . ( revolutions per minutes ) of the wheel is 
Options: a ) 200 , b ) 250 , c ) 300 , d ) 330 , e ) none of these

Output: b


Input: Consider Input: Problem: a train running at the speed of 60 km / hr crosses a pole in 6 sec . what is the length of the train ? 
Options: a ) 356 , b ) 278 , c ) 127 , d ) 100 , e ) 150

Output: d


Input: Consider Input: Problem: if 8 spiders make 8 webs in 8 days , then 1 spider will make 1 web in how many days ? 
Options: a ) 7 , b ) 6 , c ) 5 , d ) 8 , e ) 3


Output: d