Which One of the Following Statements Is Not Recommended as a Way

Which one of the following statements is not recommended as a way of delivering flattery?

A) Focus on a legitimate accomplishment of the target.
B) Give the same compliment to everyone to avoid favoritism.
C) Compliment something of relatively minor importance to the target, just to be safe.
D) Provide positive feedback by giving the person a straightforward declaration of what he or she did right.