Which of the Following Is True

Which of the following is true?

A) BI vendors develop BI tools which complement more traditional information technologies.
B) BI vendors develop BI tools which replace more traditional information technologies.
C) BI vendors develop unique BI tools which don't overlap with those of other vendors.
D) BI vendors develop BI tools which replace external information.
E) BI vendors develop BI tools which replace consolidation of mergers and acquisitions.