What are the recommendations for Oracle Database 11g installation to make it Optimal Flexible Architecture （OFA）-compliant？（）
- A ORACLE_BASE should be set explicitly.
- B An Oracle base should have only one Oracle home created in it.
- C Flash recovery area and data file location should be on separate disks.
- D Flash recovery area and data file location should be created under Oracle base in a non-Automatic Storage Management （ASM） setup.