Which two statements are true regarding an Automatic Storage Management (ASM) instance? （）

A. s ASM instance mounts an ASM control file

B. n ASM instance uses the ASMB process for rebalancing of disks within a disk group

C. utomatic Memory Management is enabled in an ASM instance even when the MEMORY_TARGET parameter is not set explicitly

D. n RDBMS instance gets connected to an ASM instance using ASMB as a foreground process when the database instance is started