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

Example Input: Problem: there are 7 pairs of socks and 2 socks are worn from that such that the pair of socks worn are not of the same pair . what is the number of pair that can be formed .
Options: a ) 40 , b ) 49 , c ) 41 , d ) 56 , e ) 42
Example Output: e

Example Input: Problem: a fair coin is tossed 5 times . what is the probability of getting more heads than tails in 5 tosses ?
Options: a ) 1 / 2 , b ) 63 / 128 , c ) 4 / 7 , d ) 61 / 256 , e ) 63 / 64
Example Output: a

Example Input: Problem: if two dice are thrown together , the probability of getting an even number on one die and an odd number on the other is ?
Options: a ) 1 / 9 , b ) 1 / 2 , c ) 1 / 1 , d ) 1 / 5 , e ) 1 / 8
Example Output:
b