Which of the following statements about data warehouses is not true?

A) They store supply data to be used across the enterprise for management analysis and decision making.
B) Data warehouse systems provide a range of ad hoc and standardized query tools, analytical tools, and graphical reporting facilities.
C) They may include data from website transactions.
D) Data warehouse systems provide easy-to-use tools for managers to easily update data.
E) Data warehouses make data available for anyone to access as needed.

D