(A) Use maximum and minimum CPC limits or bid estimates
(B) Applying similar rules with different criteria to subsets of your account
(C) Use all five 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) Applying similar rules with different criteria to subsets of your account
(C) Use all five bidding strategies all of the time
(D) Monitor performance at least once per week