Which two statements are true regarding an Automatic Storage Management （ASM） instance？（）
- A As ASM instance mounts an ASM control file
- B An ASM instance uses the ASMB process for rebalancing of disks within a disk group
- C Automatic Memory Management is enabled in an ASM instance even when the MEMORY_TARGET parameter is not set explicitly
- D An RDBMS instance gets connected to an ASM instance using ASMB as a foreground process when the database instance is started