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

Example Input: Problem: what is the probability of having 53 fridays in an ordinary year 
Options: a ) 1 / 5 , b ) 1 / 6 , c ) 1 / 7 , d ) 1 / 8 , e ) 1 / 9
Example Output: c

Example Input: Problem: there is a 50 % chance jen will visit chile this year , while there is a 50 % chance that she will visit madagascar this year . what is the probability that jen will visit either chile or madagascar this year , but not both ? 
Options: a ) 25.0 % , b ) 50.0 % , c ) 62.5 % , d ) 75.0 % , e ) 80.0 %
Example Output: b

Example Input: Problem: what is the probability that company g ' s advertisement will be one of the first two be shown during the first commercial break ? 
Options: a ) 1 / 225 , b ) 1 / 30 , c ) 1 / 15 , d ) 2 / 15 , e ) 4 / 15
Example Output:
d

