You are managing Oracle Database 11g with an ASM storage with high redundancy. The following command was issued to drop the disks from the dga disk group after five hours：  
ALTER DISKGROUP dga OFFLINE DISKS IN FAILGROUP f2 DROP AFTER 5H；  
Which statement is true in this scenario？（）

A. It cannot generate recommendations that support multiple workload queries.
B. It can recommend partitioning on tables provided that the workloads have some predicates and joins on the columns of the NUMBER or DATE type.
C. It can recommend partitioning only on tables that have at least 10，000 rows.
D. It can recommend only B-tree indexes and not bitmap or function-based indexes.

A. Only the incident metadata and dumps are stored in the Automatic Diagnostic Repository （ADR）.
B. The problem key is the same as the incident number.
C. The database sends an incident alert to the Oracle Enterprise Manager Database Home page.
D. Every problem has a problem key， which is a text string that describes the problem.
E. The database makes an entry into the alert log file when problems and incidents occur.

A. It creates jobs without considering the priorities associated with them.
B. It translates tasks into jobs for execution by the scheduler.
C. It determines the list of jobs that must be created for each maintenance window.
D. It is spawned by the MMON background process at the start of the maintenance window.
E. It maintains a repository in the SYSTEM tablespace to store the history of the execution of all tasks.