Mercurius
Legend
I interpreted the question literally, which is my preference so I voted "doesn't matter."
For the sake of the general public, I think the second or third option are fine. The fourth is overkill and would be irritating for many/most customers, especially of such a book in which it is assumed.
For the sake of the general public, I think the second or third option are fine. The fourth is overkill and would be irritating for many/most customers, especially of such a book in which it is assumed.