Which two statements are true regarding data sources in relation to editing filters? (Choose two.)

A.
Each filter requires at least one data source.

B.
Each filter requires more than one data source.

C.
If multiple data sources are selected, the Filter Builder displays all the fields from those data
sources.

D.
The default data source corresponds to the default ObjectServer specified in the
ncwDataSourceDefinitions.xml configuration file.

E.
The data sources selected in the Filter Builder are used in the Active Event List, Map Editor, or
Event Dashboard to retrieve event data.