Which two statements are true?

Examine the commands executed to monitor database operations:
$> conn sys/oracle@prod as sysdba
SQL> VAR eid NUMBER
SQL>EXEC :eid := DBMS_SQL_MONITOR.BEGlN_OPERATION(‘batch_job’,FORCED_TRACKING=>’Y’);
Which two statements are true?

A.
Database operations will be monitored only when they consume a significant amount of resource.

B.
Database operations for all sessions will be monitored.

C.
Database operations will be monitored only if the STATISTICS_LEVEL parameter is set to TYPICAL and
CONTROL_MANAGEMENT_PACK_ACCESS is set DIAGNISTIC + TUNING.

D.
Only DML and DDL statements will be monitored for the session.

E.
All subsequent statements in the session will be treated as one database operation and will be monitored.

Explanation:
C: Setting the CONTROL_MANAGEMENT_PACK_ACCESS initialization parameter to DIAGNOSTIC+TUNING
(default) enables monitoring of database operations. Real-Time SQL Monitoring is a feature of the Oracle
Database Tuning Pack.
Note:
* The DBMS_SQL_MONITOR package provides information about Real-time SQL Monitoring and Real-time
Database Operation Monitoring.
*(not B) BEGIN_OPERATION Function starts a composite database operation in the current session.
/ (E) FORCE_TRACKING – forces the composite database operation to be tracked when the operation starts.
You can also use the string variable ‘Y’.
/ (not A) NO_FORCE_TRACKING – the operation will be tracked only when it has consumed at least 5 seconds
of CPU or I/O time. You can also use the string variable ‘N’.