When performing a database duplication， which duplicate database parameter would you set to ensure that the online redo logs are created in the correct location？（）
1、若a=5，b=3，c=4，逻辑表达式!（a+b）&；&；!c的值
若a=5，b=3，c=4，逻辑表达式!（a+b）&；&；!c的值为（）A0B-1C1D2
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