Which is the correct one?

[Cervantes]

Which one of the following is the correct one?

1- A candle sheds a dim light on an open book.

2- A candle sheds a dim light to an open book.

3- A candle sheds a dim light upon an open book.

4- A candle sheds a dim light toward an open book.

As you can see here my concern is the preposition...

Thanks for your help.

[5jj]

The first and third are the least unnatural.

[Cervantes]

Thanks...