Which two are the uses of the ASM metadata backup and restore （AMBR） feature？（）

• A、 It can be used to back up all data on ASM disks.
• B、 It can be used to recover the damaged ASM disk group along with the data.
• C、 It can be used to gather information about a preexisting ASM disk group with disk paths，disk name，failure groups，attributes templates，and alias directory structure.
• D、 It can be used to re-create the ASM disk group with its attributes.