Your production database PROD uses file system storage. You want to migrate storage including the Fast Recovery Area for the PROD database to Oracle Automatic Storage Management (ASM) by using RMAN. You back up the entire database. What should the next step be in this migration process? 

Answer options:

A. enabling row movement for the database
B. disabling Oracle Flashback Database if enabled
C. opening the database in exclusive mode
D. placing all tablespaces in read-only mode

B

References: https://docs.oracle.com/cd/E11882_01/server.112/e18951/asm_rman.htm#OSTMG89995