Ks preflop decision

[ycjason]

6 handed table at 2/4, folds to CO open for 12, button raise to 40, and you have Ks on sb, assuming both CO and button are decent TAGs and everyone has 100xbb. What's the best line to extract here. This seems to me there is not way to underep my hand here, either I call or raise it should seem like As/Ks, and in fact, that's pretty much the only hands that I would do this with the exception of maybe AKs sometimes. So I usually just push here and get everyone to fold or get As to call me. Is there a better way to play this?