Task: Question Answering
Input (English): Problem: the sale price of a trolley bag including the sale tax is rs . 560 . 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 1000 , b ) rs 900 , c ) rs 400 , d ) rs 600 , e ) none of these
Output (English): c