The ORACLE_SID environment variable is set to +ASM. ASMLIB is not used in the configuration. You executed the following command to startup the Automatic Storage Management (ASM) instance. SQL> STARTUP; Which two activities are performed during a successful start up operation?（）

A

The databases configured to use the ASM instance are mounted

B

The disk groups are mounted as per the ASM_DISKGROUPS initialization parameter

C

ASM starts the Oracle Cluster Synchronization Services (CSS) daemon if it is not started

D

ASM discovers and examines the contents of all files that are in the paths specified in the ASM_DISKGROUPS initialization parameters

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