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 sells a bicycle to b and makes a profit of 25 % . b sells the same bicycle to c at a profit of 50 % . if the final s . p . of the bicycle was rs . 225 , find out the cost price of the bicycle for a . 
Options: a ) 237 , b ) 126 , c ) 971 , d ) 611 , e ) 120

A: e
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Q: Problem: in the manufacture of a certain product , 8 percent of the units produced are defective and 4 percent of the defective units are shipped for sale . what percent of the units produced are defective units that are shipped for sale ? 
Options: a ) 0.125 % , b ) 0.32 % , c ) 0.8 % , d ) 1.25 % , e ) 2.0 %

A: b
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Q: Problem: what is the rate percent when the simple interest on rs . 800 amount to rs . 128 in 4 years ? 
Options: a ) 5 % , b ) 3 % , c ) 4 % , d ) 9 % , e ) 1 %

A:
c
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