Quote Originally Posted by inV1NCEble
wow, answers like that make me realise that I still have alot to learn

So when we know that villain folds alot vs 3bet we expend C range and if they raise light we expend B?
Say we know villain opens a wide range, then we should plan more hands. That means we can expand our B range and call profitably with more hands. To determine what we should do with our A range and C range, we need to know how he responds to our 3bets.

If he folds often, then 3bet bluffing becomes very profitable, so we can definitely expand our C range. And in some situations we will likely want to narrow down our A range, because if he's folding very often it's going to be less +EV to 3bet our value hands than to call and extract money on later streets. This is situations such as villain opens UTG, we have the BU with AA, so we decide to call, rather than 3bet when he's folding everything but QQ+ to a 3bet here. That's kinda general, but we are talking general here.

If he's calling 3bets with a wide range, or 4bet/stacking off with a wide range, then 3bet bluffing becomes less and less profitable. In which case we would narrow our C range, and expand our A range (value 3bet range).