In this task, you need to answer the given multiple-choice question on the gain. Gain is the value by which to multiply the input. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.

Input: Consider Input: Problem: in a certain city , 70 percent of the registered voters are democrats and the rest are republicans . in a mayoral race , if 80 percent of the registered voters who are democrats and 30 percent of the registered voters who are republicans are expected to vote for candidate a , what percent of the registered voters are expected to vote for candidate a ?
Options: a ) 65 % , b ) 52 % , c ) 85 % , d ) 69 % , e ) 75 %

Output: a

Input: Consider Input: Problem: the difference between the compound interest compounded annually and simple interest for 2 years at 20 % per annum is rs . 72 . find the principal ?
Options: a ) 2277 , b ) 2667 , c ) 3600 , d ) 2766 , e ) 1800

Output: e

Input: Consider Input: Problem: effective annual rate of interest corresponding to nominal rate of 6 % per annum compounded half yearly will be
Options: a ) 6.09 % , b ) 6.10 % , c ) 6.12 % , d ) 6.14 % , e ) none of these
Output: a