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: in an election between two candidates , one got 55 % of the total valid votes , 20 % of the votes were invalid . if the total number of votes was 6000 , the number of valid votes that the other candidate got , was : 
Options: a ) 2800 , b ) 2700 , c ) 2160 , d ) 2200 , e ) 2300

A: c
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Q: Problem: calculate the dividend from moses ' s stock , if he invested rs . 3000 at 72 to obtain an income of rs . 210 . 
Options: a ) 3 , b ) 9 , c ) 3 , d ) 4 , e ) 5.04

A: e
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Q: Problem: the annual interest rate earned by an investment increased by 10 percent from last year to this year . if the annual interest rate earned by the investment this year was 12.5 percent , what was the annual interest rate last year ? 
Options: a ) 1 % , b ) 1.1 % , c ) 9.1 % , d ) 11.36 % , e ) 10.8 %

A:
d
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