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