Turn and river cbet

[stuart_gall]

Hello,
Can someone tell me what is the definition of Turn continuation bet, and river continuation bet (as far as PT3 is concerned)
I mean is it the preflop agressor, the flop agressor, either ?
For exmple
A)
preflop
Raise - call
Flop
Bet - call
Turn
Bet

------------
B)
Preflop
Raise - call
Flop
Chek - bet
Call
Turn
Check - bet
--------------
C)
preflop
Raise - call
flop
check - bet
call
turn
Bet
--------------
D)
Preflop
Raise - call
Flop
Chek - Chek
Turn
Bet

--------------
E) all of the above ?

[kraada]

In order to continuation bet the turn you must have continuation bet the flop. In order to continuation bet the river, you must have continuation bet the turn.