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: find number which is 60 % less than 120 . 
Options: a ) 18 , b ) 22 , c ) 28 , d ) 48 , e ) 98

A: d
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Q: Problem: 150 is what percent of 60 ? 
Options: a ) 250 % , b ) 20 % , c ) 50 % , d ) 200 % , e ) 500 %

A: a
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Q: Problem: the annual interest rate earned by an investment increased by 6 percent from last year to this year . if the annual interest rate earned by the investment this year was 15.90 percent , what was the annual interest rate last year ? 
Options: a ) 20 % , b ) 18 % , c ) 16 % , d ) 25 % , e ) 15 %

A:
e
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