Research Tends to Show That the Relationship Between the Accuracy

Research tends to show that the relationship between the accuracy of an eyewitness' testimony and the eyewitness' confidence or certainty is

A) relatively strong.
B) relatively weak.
C) strong when the eyewitness is a female and weak when the eyewitness is a male.
D) strong only when the eyewitness was under stress while observing the crime.