[Specialwon]

These spots are all quite player and position dependent.

But, let's say for arguments sake that a "standard" range to call a 3bet might be, say, JJ+, AKo+. In that case, the single biggest risk factor is going to be whether the flop includes another broadway card. So, in example 1 with KK, although he has an A less than half of the time, you are a dog to his range whereas you would have been a slight favourite without the J.

I would also be more inclined, paradoxically, to 3bet QQ than KK on an A high flop because of the increased chance of folding out KK. With KK there is a stronger argument for c/c.

So, of the 3 I would say only No. 2 looks like a good candidate.