A Physical Standby Database Is Kept Synchronized with the Primary

Multiple Choice

A physical standby database is kept synchronized with the primary database, through Redo Apply, which recovers the redo data received from the primary database and applies the redo to the physical standby database. Which of the following disaster recovery technologies is working as the above statement?

A) LogReplecation
B) DataGuard
C) GoldenGate
D) VVR