What are functions of Query-Viewers? (Select two.)
A. displaying the Boolean logic and conditions linkage behind filters ana rules criteria
B. providing a baseline analysis of events against which future queries can be compared
C. determining which devices are off-line at any given point in time by querying their status
D. providing a quick way to run SQL queries and identify trends without running reports
E. presenting detailed comparisons of report elements, not possible with reporting tools