Task: Question Answering
Input (English): Problem: a merchant has selected two items to be placed on sale , one of which currently sells for 25 percent less than the other . if he wishes to raise the price of the cheaper item so that the two items are equally priced , by what percentage must he raise the price of the less expensive item ? 
Options: a ) 52 % , b ) 40 % , c ) 30 % , d ) 20 % , e ) 10 %
Output (English): c