5) Consider the following method: public static void doStuff(int a, int b) a++;b++;System.out.println(a+n+b); What is the output of the following code? int x=7; int y=5; dostuff(x, y); System.out.println (x+""+y); (A) 86 (B) 68 (C) 57 (D) 86 (E) 68