Which three statements are true about hierarchical profiling?

Which three statements are true about hierarchical profiling? (Choose three.)

A.
It provides function-level summaries.

B.
It produces an aggregated report of the SQL and PL/SQL execution times.

C.
It is useful for understanding the structure and control flow of complex programs.

D.
It can be used to identify hotspots and tuning opportunities in PL/SQL applications.

E.
It generates trace information for PL/SQL programs in the PLSQL_TRACE_EVENTS table.