Question regarding the Double The Raise rule...

[EWillers]

The correct answer is "a". To my knowledge, this was universal in Vegas until recently.

For better or worse, Planet Hollywood has adopted a seemingly insane rule that states the raise must be double the previous bet.

So a player bets 100 on the flop and the next player raises to 250. A player wanting to raise the bet of 250 must make it a minimum of 500 (not 400).

Strange but true. (at least as of a couple months ago)