Select all the following reasons why Data Shadow Systems may create problems at an organization: They may be accurate an inexpensive. They may be unmaintained and deteriorate over time. They may have no documentation, so their calculations are not transparent. They may use data from a sanctioned BI Application. They may fill in the gaps that the BI Applications do not answer. They may produce reports that have inconsistent results with the organization's BI Applications. They may not update as an organization's hierarchies change over time. They may take time to run each day, week, or month - which is a loss of productivity for the organizatio