Task: Question Answering
Input (English): Problem: on a certain day , joey , the ice - cream seller sold his ice creams to 4 different kids in a manner that each of the kids purchased half of the remaining ice creams and half ice - cream more . if we tell you that the fourth kid bought just a single ice cream , can you find out how many ice creams were sold by joey that day ? 
Options: a ) 15 , b ) 20 , c ) 22 , d ) 12 , e ) 8
Output (English): a