Task: Question Answering
Input (English): Problem: the sale price of a trolley bag including the sale tax is rs . 280 . the rate of sale tax is 12 % . if the shopkeeper has made a profit of 25 % , the cost price of the trolley bag is : 
Options: a ) rs 200 , b ) rs 220 , c ) rs 260 , d ) rs 280 , e ) none of these
Output (English): a