Which three describe how often OCR backups are taken and how many are retained, according to the default backup schedule?

Which three describe how often OCR backups are taken and how many are retained, according to
the default backup schedule?

A.
every 12 hours and the Clusterware keeps the last four copies

B.
every 4 hours and the Clusterware keeps the last three copies

C.
every day and the Clusterware keeps the last two copies

D.
every day and the Clusterware keeps the last three copies

E.
every week and the Clusterware keeps the last two copies

Explanation:
Locating the OCR Automatic Backups
The OCR is backed up automatically.
Only one node performs the backup.
To determine the node and location of the backup:
$ ocrconfig -showbackup auto
host02 2009/07/28 12:20:42 /u01/app/…/cdata/cluster01/backup00.ocr
host02 2009/07/28 08:20:41 /u01/app/…/cdata/cluster01/backup01.ocr
host02 2009/07/28 04:20:40 /u01/app/…/cdata/cluster01/backup02.ocr
host02 2009/07/27 16:20:37 /u01/app/…/cdata/cluster01/day.ocr
host02 2009/07/28 00:20:39 /u01/app/…/cdata/cluster01/week.ocr
Files could be spread across nodes due to outages.
The backup frequency and retention policies are:
Every four hours: CRS keeps the last three copies.
At the end of every day: CRS keeps the last two copies.
At the end of every week: CRS keeps the last two copies.
D60488GC11
Oracle 11g: RAC and Grid Infrastructure Administration Accelerated 3 – 11