tab Canvas X Question 19 Consider the following incomplete code: esc 2 public class Test { public static void main(String[] args) { String result appendSeven (5); // result is "57" } } public static String appendSeven(int n) { // Missing body } The missing method body should be return "n" +7; System.out.println(n+7); return n + "7"; O System.out.println("n" + "7"); Question 20 ! 1 F1 Q @ 2 F2 W #3 80 F3 E $ 4 Q F4 R % 5 F5 T MacBook Air