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'.

[Q]: Problem: sheela deposits rs . 5000 in bank savings account . if this is 20 % of her monthly income . what is her monthly income in ? 
Options: a ) 22000 , b ) 20000 , c ) 25000 , d ) 22235 , e ) none of these
[A]: c


[Q]: Problem: find the compound interest on $ 800 for 1 year at 10 % p . a . if ci is component yearly ? 
Options: a ) $ 40 , b ) $ 400 , c ) $ 840 , d ) $ 800 , e ) $ 80
[A]: a


[Q]: Problem: a sum fetched a total simple interest of rs . 4016.25 at the rate of 5 % p . a . in 5 years . what is the sum ? 
Options: a ) 12021 , b ) 14520 , c ) 16065 , d ) 18925 , e ) 12887
[A]:
c