Exam 1z0-851 topic 1 question 11 discussion

Given:
01. public class Rainbow {
02. public enum MyColor {
03. RED(0xff0000), GREEN(0x00ff00), BLUE(0x0000ff);
04. private final int rgb;
05. MyColor(int rgb) { this.rgb = rgb; }
06. public int getRGB() { return rgb; }
07. };
08. public static void main(String[] args) {
09. //insert code here
10. }
11. }
Which code fragment, inserted at line 9, allows the Rainbow class to compile?