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: rs . 200 amounts to rs . 800 in 8 years at simple interest . if the interest is increased by 5 % , it would amount to how much ?
Options: a ) 520 , b ) 440 , c ) 260 , d ) 280 , e ) 120

Output: d

Input: Consider Input: Problem: the simple interest on rs . 20 for 6 months at the rate of 5 paise per rupeeper month is
Options: a ) 1.2 , b ) 1.4 , c ) 6 , d ) 7 , e ) none

Output: c

Input: Consider Input: Problem: a sum of money at simple interest amounts to rs . 820 in 3 years and to rs . 854 in 4 years . the sum is :
Options: a ) 647 , b ) 718 , c ) 654 , d ) 847 , e ) 976
Output: b