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: a candidate got 35 % of the votes polled and he lost to his rival by 2340 votes . how many votes were cast ? 
Options: a ) 7500 , b ) 3388 , c ) 2665 , d ) 7800 , e ) 2661

A: d
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Q: Problem: the market value of a certain machine decreased by 10 percent of its purchase price each year . if the machine was purchased in 1982 for its market value of $ 8000 , what was its market value two years later ? 
Options: a ) $ 8,000 , b ) $ 5,600 , c ) $ 3,200 , d ) $ 6,400 , e ) $ 800

A: d
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Q: Problem: in an election between two candidates , the winner has a margin of 10 % of the votes polled . if 4000 people change their mind and vote for the loser , the loser would have won by a margin of 10 % of the votes polled . find the total number of votes polled in the election ? 
Options: a ) 16000 , b ) 10000 , c ) 40000 , d ) 12000 , e ) 5000

A:
c
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