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

Example Input: Problem: in how many ways 4 boys and 1 girls can be seated in a row so that they are alternate . 
Options: a ) 144 , b ) 288 , c ) 24 , d ) 256 , e ) none
Example Output: c

Example Input: Problem: two unbiased coins are tossed . find the probability of getting at most one head ? 
Options: a ) 1 / 2 , b ) 3 / 4 , c ) 2 / 5 , d ) 2 / 3 , e ) 1 / 4
Example Output: b

Example Input: Problem: a coin is tossed twice if the coin shows head it is tossed again but if it shows a tail then a die is tossed . if 8 possible outcomes are equally likely . find the probability that the die shows a number greater than 4 , if it is known that the first throw of the coin results in a tail 
Options: a ) 2 / 4 , b ) 1 / 3 , c ) 2 / 3 , d ) 3 / 6 , e ) 1 / 4
Example Output:
b