Advantages of Data Marts Over Data Warehouses Are All of the Following

Multiple Choice

Advantages of data marts over data warehouses are all of the following except:

A) data marts require shorter lead times for implementation,often less than 90 days.
B) data marts allow for local rather than central control,giving end-users more power or control.
C) data marts have higher quality and more complete enterprise data.
D) data marts are easier to understand and navigate because they contain less data.