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

Ex Input:
Problem: in a circuit board factory , all circuit boards that pass a verification process are certified . every board that fails the verification process is indeed faulty , but 1 / 8 of those that pass are also faulty . approximately how many faulty circuit boards exist in a group of 3,200 circuit boards where 64 fail inspection ? 
Options: a ) 72 , b ) 192 , c ) 456 , d ) 256 , e ) 264

Ex Output:
c


Ex Input:
Problem: ratio between rahul and deepak is 4 : 3 , after 6 years rahul age will be 26 years . what is deepak present age . 
Options: a ) 14 , b ) 15 , c ) 20 , d ) 22 , e ) 24

Ex Output:
b


Ex Input:
Problem: half of the workers in palabras bookstore have read the latest book by j . saramago , and 1 / 6 of the workers have read the latest book by h . kureishi . the number of workers that have read neither book is one less than the number of the workers that have read the latest saramago book and have not read the latest kureishi book . if there are 150 workers in the palabras bookstore , how many of them have read both books ? 
Options: a ) 13 , b ) 12 , c ) 9 , d ) 8 , e ) 7

Ex Output:

b