So far scenario A seems to be playing out, with a high of ± $2700 and correction to ± $2300. Things are moving quicker then expected though.
It's funny how accurate scenario A is

This should be interesting, to compare.
But probably there will be big breakthrough when people will accept it (next financial crisis?).
I also think that the forecasts for a couple of thousand dollars for 2020 look very ridiculous. Already today the price for Bitcoin rises steadily enough and can soon reach $ 3000 within 5 or 6 months.