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'.

Input: Consider Input: Problem: if 40 % of a certain number is 160 , then what is 90 % of that number ? 
Options: a ) 270 , b ) 380 , c ) 260 , d ) 360 , e ) 290

Output: d


Input: Consider Input: Problem: from the beginning to the end of 2007 , the price of a stock rose 20 percent . in 2008 , it dropped 25 percent . in 2009 , it rose 25 percent . what percent of the stock â € ™ s 2007 starting price was the price of the stock at the end of 2009 ? 
Options: a ) 80 , b ) 90 , c ) 95 , d ) 100 , e ) 112.5

Output: e


Input: Consider Input: Problem: if a town of 65,000 people is growing at a rate of approx . 1 % per year , the population of the town in 5 years will be closest to ? 
Options: a ) a . 66000 , b ) b . 67000 , c ) c . 68000 , d ) d . 69000 , e ) e . 70000


Output: a