The third one. The color of the health bars indicates which version of the game it is with the original (DOA5) having blue, Ultimate (DOA5U) having orange and Last Round (DOA5LR) having green health bars.
I would advise looking at guides from Ultimate as pretty much everything from there is still relevant as for vanilla 5 a lot of stuff is no longer relevant as Sarah got new tools in ultimate there are clear combos from vanilla 5 that still work but that would be too extensive to list out. I'd...