Definition: In this task, you need to provide the correct option for a given problem on probability from the provided options.
Input: Problem: if two integers x , y ( x > y ) are selected from - 10 to 11 ( inclusive ) , how many possible cases are there ? 
Options: a ) 150 , b ) 180 , c ) 190 , d ) 210 , e ) 231
Output:
e