D) All the above
As a former OSP tech, I prefer fiber. Media converters are cheap. If you have to go overhead, they make a self-supporting inner duct just for that purpose. That way no need for fancy strands, cables, or grounding.
Wireless, at that distance, should work with about any normal wireless LAN. But if you want more, there are several good wireless systems that could do the trick and give you maximum speed and bandwidth.
Copper would be the last choice due to the conduit, overhead support, grounding, protection, et al.
Just my experience.
KLD.
