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

Input: Consider Input: Problem: a fair coin is tossed 11 times . what is the probability of getting more heads than tails in 11 tosses ? 
Options: a ) 1 / 2 , b ) 63 / 128 , c ) 4 / 7 , d ) 61 / 256 , e ) 63 / 64

Output: a


Input: Consider Input: Problem: three unbiased coins are tossed . what is the probability of getting 1 heads , 1 tail ? 
Options: a ) 3 / 4 , b ) 1 / 4 , c ) 3 / 8 , d ) 7 / 8 , e ) 2 / 8

Output: e


Input: Consider Input: Problem: there are 15 boys and 10 girls in a class . if three students are selected at random , in how many ways that 1 girl or 2 boys are selected ? 
Options: a ) 100 , b ) 105 , c ) 115 , d ) 120 , e ) 125


Output: c