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

Input: Consider Input: Problem: what is the square root of 6,561 ? 
Options: a ) 18 , b ) 9 , c ) 45 , d ) 62 , e ) 81

Output: e


Input: Consider Input: Problem: the least whole number which when subtracted from both the terms of the ratio 6 : 7 to give a ratio less than 16 : 21 , is ? 
Options: a ) 3 , b ) 4 , c ) 5 , d ) 6 , e ) 7

Output: a


Input: Consider Input: Problem: two dice are rolled . what is the probability that the sum on the top face of both the dice will be greater than 9 ? 
Options: a ) 3 / 8 , b ) 2 / 3 , c ) 1 / 2 , d ) 1 / 3 , e ) 1 / 6


Output: e