AThe C # # B_ADMIN user can perform all backup and recovery operations using RMAN only.
BThe C # # C_ADMIN user can perform the data guard operation with Data Guard Broker.
CThe C # # A_ADMIN user can perform wallet operations.
DThe C # # D_ADMIN user can perform backup and recovery operations for Automatic Storage Management (ASM).
EThe C # # B_ADMIN user can perform all backup and recovery operations using RMAN or SQL* Plus.