Planet Nine Maybe a Blackhole

[guohua]

There is still the question about Planet 9 

Is 'Planet Nine' actually a grapefruit-sized black hole? Big new telescope could find out
Source

I don't think it is a small Grapefruit size Black Hole. 
Of course the only ancient peoples I know of that mention planet nine was the Ancient Sumerians, but I think they said there was 9 planets out there.
Calling the 9th planet Nibiru.
But for 9 planets we need to make Pluto a Planet again.


Thoughts?