Min raise in front of multiple all-in wagers

[MikeB]

Mike,

 First of all; Player A can't raise  Player's B and C unless another player is in the hand. Secondly, if you are correct on this one, I'm lost again. I would rule (from your example)

 Player A bets 500 Player B goes all-in for 800 and Player C goes all-in for 1200. You said that the correct min raise would not be 1200+700. Can you explain? This is of course is assuming at least Player D is in the hand.

Nick: those are likely somebody else's examples, I don't I think made them.

[Nick C]

Sorry Mike,

 I read it, and then it was gone.