A customer runs an Oracle 11g database. Over time they begin to complain about nightly write issues.
After a complete review, no issues were found on the server.
What is the most probable cause?

A.
Archive logs are located on RAID 1 devices

B.
Control files are on the same devices with the datafiles

C.
Datafiles are located on RAID 1/0 devices

D.
Redo logs are on the same devices with the datafiles