WhichnewkeyarchitecturalelementintroducedinWebLogicServerl2cshouldyoutakeadvantageofwhendesigningDisasterRecoveryCenterswithactive-passivemode?()

WhichnewkeyarchitecturalelementintroducedinWebLogicServerl2cshouldyoutakeadvantageofwhendesigningDisasterRecoveryCenterswithactive-passivemode？（）

A、MANClusters,becausetheywouldallowyoutosynchronouslyreplicatestateinlowlatencynetworks

B、WANClusters,becausetheywouldallowyoutoasynchronouslyreplicatestateinnonlowlatencynetworks.

C、TransactionLoginthedatabase,becauseyoucouldavoidsynchronizingtworeplicationtechnologies(databaseandfile)

D、DataGuard,becauseitisthemosteffectivewaytoreplicateastateacrosslocations

E、GoldenGate,becauseitisthemosteffectivewaytoreplicateastateacrosslocations