8. Which of the following method signatures are valid overrides of the hairy() method in the Alpaca class? 01: import java.util.*; 02: public class Alpaca { 03: 04: } protected List hairy(int p) { return null; } (Choose all that apply) List hairy(int p) { return null; } public List hairy(int p) { return null; } public List hairy(int p) { return null; } private List hairy(int p) { return null; } public Object hairy(int p) { return null; } public ArrayList hairy(int p) { return null; }