A. No SYS operations are audited if audit_sys_operations is set on false in mixed mode auditing.

B. No SYS operations are audited by default In unified auditing.

C. SYS logon operations are always audited in mixed mode auditing.

D. No SYS operations are audited if audit_sys_operations is set on false in unified auditing.

E. SYS logon operations are always audited In unified auditing.

F. All SYS operations are audited by default in unified auditing.