Positive Feedback Increases Confidence in Memory

Positive feedback increases confidence in memory.In light of the available evidence,which of the following seems the most likely explanation?

A) People are reasoning along the lines of "I was just told I got it right,so I guess I can set aside my doubts about my memory!"
B) People are reasoning along the lines of "I was always certain,but it seemed wrong to brag.The feedback,though,makes me feel comfortable saying how sure I am."
C) People are reasoning along the lines of "I'm not sure I trust the experimenter's feedback;maybe the experiment is trying to deceive me.Maybe,then,I should shift my confidence downward just to be careful."
D) People are reasoning along the lines of "I know I got a poor view of the target,but the feedback confirms something I've always believed-that I have a terrific memory!"