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 shopkeeper sells his goods at cost price but uses a faulty meter that weighs 800 grams . find the profit percent . 
Options: a ) 20 , b ) 15 , c ) 25 , d ) 18 , e ) 19

A: c
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Q: Problem: the population of a town is 10000 . it increases annually at the rate of 27 % p . a . what will be its population after 2 years ? 
Options: a ) 14000 , b ) 14400 , c ) 16129 , d ) 14600 , e ) 14700

A: c
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Q: Problem: john had a stock of 1000 books in his bookshop . he sold 20 on monday , 120 on tuesday , 200 on wednesday , 250 on thursday and 300 on friday . what percentage of the books were not sold ? 
Options: a ) 68 % , b ) 74 % , c ) 76 % , d ) 62 % , e ) 89 %

A:
e
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