Task: Question Answering
Input (English): Problem: selling an kite for rs . 30 , a shop keeper gains 20 % . during a clearance sale , the shopkeeper allows a discount of 10 % on the marked price . his gain percent during the sale is ? 
Options: a ) 8 % , b ) 10 % , c ) 11 % , d ) 15 % , e ) 20 %
Output (English): a