What Was the Boundary on the Acquaintanceship Effect Identified by Colvin

What was the boundary on the acquaintanceship effect identified by Colvin and Funder (1991) ?

A) The advantage of close acquaintances vanishes when the criterion is the ability to predict behavior in a situation similar to one that strangers have seen but acquaintances have not.
B) Judgments made by acquaintances who have known the target for 5 years are as valid as judgments made by parents and acquaintances who have known the target for 20 years.
C) Strangers' judgments are more accurate than acquaintances' judgments when the criterion is self-other agreement.
D) Strangers' judgments, based on a five-minute videotape of the target's behavior, demonstrated these judges' ability to generalize to situations and contexts that were very different from the videotaped interactions.