The Halo Effect as a Rater Bias,is Most Severe When

The halo effect as a rater bias,is most severe when:

A) a rater is too harsh in their evaluations
B) the extremes of "excellent" or "very poor" are used more than necessary
C) raters choose to remain emotionally detached
D) a rater must evaluate their friends
E) only the most recent employee performance is considered