It means option B. Pulling the bar apart + retracting the shoulder blades (as if you are doing a band pull-apart) will do wonders for you.
When I bench this is my set-up:
Feet way back so I'm on the balls of my feet (butt still on bench).
Retracted shoulder blades, tight lats, pull bar out from rack.
Big breath in belly and descend, while pushing down with heels.
Pull bar apart throughout.
Bar should move straight down.