public static int mystery (int x, int y) if (y-1) return x else return x + mystery (x,y-1): public static void main (String args[]) System.out.println (mystery (1,3)) System.out.println (mystery (2,3)) System.out.println (mystery (3,3)) System.out.println (mystery (4,3)) System.out.println (mystery (5,3)) a) Run the above code and include a screenshot that shows the code and the output. b) Look at the output results in part a) compared with the values of x and y, and deduce the task that mystery method does. c) Draw the decomposition and composition of mystery(2,3)