Which of the following declarations and initializations will not cause a compiler error?

Consider the following inheritance hierarchy that is used in a video game.

```
Character
/ \
Friend Villain
/ \ / \
WiseMan ShopKeeper Dragon Skeleton
| |
FlyingDragon EliteSkeleton
```

```
Character c = new FlyingDragon();
FlyingDragon f = new Character();
Dragon d = new Villain();
Villain v = new Skeleton();
Dragon d = new ShopKeeper();
```

What will be an ideal response?

The following are valid for this inheritance hierarchy because of the is-a relationship.
```
Character c = new FlyingDragon();
Villain v = new Skeleton();
```