In this task, you need to provide the correct option for a given problem from the provided options.

Ex Input:
Problem: one fast typist type some matter in 2 hrs and another slow typist type the same matter in 3 hrs . if both do combine in how much time they will take to finish . 
Options: a ) 10 , b ) 11 , c ) 12 , d ) 13 , e ) 14

Ex Output:
c


Ex Input:
Problem: the ratio of buses to cars on river road is 1 to 13 . if there are 60 fewer buses than cars on river road , how many cars are on river road ? 
Options: a ) 65 , b ) 60 , c ) 55 , d ) 40 , e ) 45

Ex Output:
a


Ex Input:
Problem: cheese , bologna , and peanut butter sandwiches were made for a picnic in a ratio of 1 to 7 to 8 . if a total of 80 sandwiches were made , how many bologna sandwiches were made ? 
Options: a ) 15 , b ) 30 , c ) 35 , d ) 42 , e ) 48

Ex Output:

c