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 261,121 ? 
Options: a ) 476 , b ) 489 , c ) 497 , d ) 511 , e ) 524

Output: d


Input: Consider Input: Problem: the h . c . f . of two numbers is 32 and the other two factors of their l . c . m . are 13 and 14 . the larger of the two numbers is : 
Options: a ) 448 , b ) 299 , c ) 421 , d ) 460 , e ) 365

Output: a


Input: Consider Input: Problem: if the ratio of the sum of the first 6 terms of a g . p . to the sum of the first 3 terms of the g . p . is 65 , what is the common ratio of the g . p ? 
Options: a ) 4 , b ) 1 / 4 , c ) 2 , d ) 9 , e ) 1 / 9


Output: a