Given:

Armor.java

public class Armor extends Item {/* Implementation not shown */}

Key.java

public class Key extends Item {/* Implementation not shown */}

Potion.java

public class Potion extends Item {/* Implementation not shown */}

Item.java

public class Item {

    public Item() {}

}

Main.java

public class Main
{
    public static void main(String[] args)
    {
        Armor armor = new Item();
        Key key = new Item();
        Potion potion = new Item();
    }
}

What will this program do?

1. Correct Answer
   Incorrect Answer
   a

   Run to completion

2. Correct Answer
   Incorrect Answer
   b

   Compile error

3. Correct Answer
   Incorrect Answer
   c

   Runtime Error

4. Correct Answer
   Incorrect Answer
   d

   Infinite Loop