1. public class Blip {  2. protected int blipvert（int x） { return 0； }  3. }  4. class Vert extends Blip {  5. // insert code here  6. }  Which five methods， inserted independently at line 5， will compile？（）  

• A、 public int blipvert（int x） { return 0； }
• B、 private int blipvert（int x） { return 0； }
• C、 private int blipvert（long x） { return 0； }
• D、 protected long blipvert（int x， int y） { return 0； }
• E、 protected int blipvert（long x） { return 0； }
• F、 protected long blipvert（long x） { return 0； }
• G、protected long blipvert（int x） { return 0； }