Why Are Social Psychologists Concerned with the Issue of Interjudge

Why are social psychologists concerned with the issue of interjudge reliability?

A) Without it, there is no hope of reforming the legal system.
B) Independent agreement reduces the possibility of bias or distortion.
C) Coding criteria must be objective and determined before observation begins.
D) Interjudge reliability makes causal explanations possible in archival research.