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 bag contains 3 blue and 5 white marbles . one by one , marbles are drawn out randomly until only two are left in the bag . what is the probability z that out of the two , one is white and one is blue ? 
Options: a ) 15 / 56 , b ) 41 / 56 , c ) 13 / 28 , d ) 15 / 28 , e ) 5 / 14

Output: d


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

Output: c


Input: Consider Input: Problem: if two integers x , y ( x > y ) are selected from - 10 to 5 ( inclusive ) , how many possible cases are there ? 
Options: a ) 105 , b ) 120 , c ) 190 , d ) 210 , e ) 240


Output: b