C++: What is the size of an object of an empty class?

Question

I was wondering what could be the size of an object of an empty class. It surely could not be 0 bytes since it should be possible to reference and

Answer 1

I think that if the size of an empty class is zero it means that it does not exist. For it (class) to exist, it requires to have at least 1 byte, since this byte is the memory/reference address.