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'.

Example Input: Problem: a side of beef lost 35 percent of its weight in processing . if the side of beef weighed 560 pounds after processing , how many pounds did it weigh before processing ? 
Options: a ) 191 , b ) 355 , c ) 737 , d ) 861 , e ) 1,560
Example Output: d

Example Input: Problem: jaclyn buys $ 10 000 worth of debentures in a company . she earns 9.5 % p . a . simple interest , paid to her quarterly ( that is , every 3 months ) . if the agreed period of the debenture was 18 months : calculate the amount of interest jaclyn will earn for each quarter 
Options: a ) 237.5 , b ) 234 , c ) 289.5 , d ) 345 , e ) none of these
Example Output: a

Example Input: Problem: the sale price sarees listed for rs . 480 after successive discount is 15 % and 25 % is ? 
Options: a ) 298 , b ) 237 , c ) 306 , d ) 876 , e ) 291
Example Output:
c