Retrieval Is Very Fast Through Data Cubes Because ________

Multiple Choice

Retrieval is very fast through data cubes because ________.

A) data cubes use a separate server which is tuned for fast retrieval and reporting
B) data are already grouped in logical dimensions, such as sales by product, city, region, and country
C) data cubes represent information in the form of objects, and use object-oriented programming languages to access them
D) data cubes organize data by attaching XML tags to them