Task: Question Answering
Input (English): Problem: the cost of an article was rs . 75 . the cost was first increased by 20 % and later on it was reduced by 20 % . the present cost of the article is : 
Options: a ) rs . 72 , b ) rs . 60 , c ) rs . 75 , d ) rs . 76 , e ) none
Output (English): a