A Distributed Join Is Never Necessary ____

Multiple Choice

A distributed join is never necessary ____.

A) if distributed data is not replicated
B) if distributed data is replicated
C) if a copy of every table is kept at one site in a distributed database network
D) if there are at least two copies of every table in a distributed database network
E) if there are at least two copies of every table involved in the join in a distributed database network