Can a dealer choose which card is his up card?

[borya31]

I don't have the answer to the question, but if I know the dealer is using a selective up card method, I would simply not play.
Knowing the exact answer to your question might be VERY interesting...

I agree not playing is safer option. But showing best card all the time could be cat and mouse game. Once you start adjusting correctly. Dealer might start showing not optimal or random card. Another interesting scenario what if Dealer trying to help his accomplice by showing card to increase edge?