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: the megatek corporation is displaying its distribution of employees by department in a circle graph . the size of each sector of the graph representing a department is proportional to the percentage of total employees in that department . if the section of the circle graph representing the manufacturing department takes up 252 ° of the circle , what percentage of megatek employees are in manufacturing ? 
Options: a ) 20 % , b ) 25 % , c ) 30 % , d ) 35 % , e ) 70 %

Ex Output:
e


Ex Input:
Problem: a man can row downstream at 16 kmph and upstream at 10 kmph . find the speed of the man in still water and the speed of stream respectively ? 
Options: a ) 3 , b ) 5 , c ) 6 , d ) 4 , e ) 9

Ex Output:
a


Ex Input:
Problem: a river 5 m deep and 19 m wide is flowing at the rate of 4 kmph the amount of water that runs into the sea per minute is ? 
Options: a ) 4500 , b ) 6333 , c ) 6576 , d ) 6345 , e ) 2882

Ex Output:

b