In this task, you need to answer the given multiple-choice question on the general math. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.

Input: Consider Input: Problem: x + ( 1 / x ) = 1.5 find x ^ 2 + ( 1 / x ^ 2 ) 
Options: a ) 2.25 , b ) 3.25 , c ) 4.25 , d ) 5.25 , e ) 0.25

Output: e


Input: Consider Input: Problem: 2525 * 9 
Options: a ) 22725 , b ) 25675 , c ) 22655 , d ) 27575 , e ) none of these

Output: a


Input: Consider Input: Problem: - 64 * 29 + 468 = ? 
Options: a ) 1430 , b ) 1302 , c ) - 2801 , d ) - 1388 , e ) none of these


Output: d