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

Example Input: Problem: a shipment of 220 smartphones contains 84 that are defective . if a customer buys two smartphones at random from the shipment , what is the approximate probability that both phones are defective ? 
Options: a ) 1 / 250 , b ) 1 / 84 , c ) 11 / 76 , d ) 1 / 9 , e ) 1 / 3
Example Output: c

Example Input: Problem: sachin is older than rahul by 7 years . if the ratio of their ages is 11 : 9 , find the age of sachin 
Options: a ) 24.5 , b ) 24.8 , c ) 38.5 , d ) 24.88 , e ) 24.19
Example Output: c

Example Input: Problem: nitin ranks 27 th in a class of 89 students . what is rank from the last ? 
Options: a ) 63 , b ) 65 , c ) 67 , d ) 87 , e ) 89
Example Output:
a