(A) Use maximum and minimum CPC limits or bid estimates
(B) Set up a bid strategy and forget about it
(C) Use all bidding strategies all of the time
(D) Monitor performance at least once per week
(A) Use maximum and minimum CPC limits or bid estimates
(B) Set up a bid strategy and forget about it
(C) Use all bidding strategies all of the time
(D) Monitor performance at least once per week