Cathy Witnesses a Carjacking

Cathy witnesses a carjacking.A few days later, she is called to the police station to identify the culprit from a lineup.Cathy is most likely to be accurate if

A) the police tell her that the culprit is in the lineup.
B) one of the men in the lineup resembles the description that Cathy had given the police, while the other men in the lineup look very different from that description.
C) she is first presented with some mug shots and then views a lineup containing one of the men whose mug shot she has seen.
D) she observes the suspects and foils one at a time rather than together in a single lineup.