单选题You have been assigned to manage a set of databases. The previous DBA did not leave you notes regarding the structure of each of the databases. While analyzing an instance， you notice that the system identifier （SID） for the instance is set to ’+ASM’. What is the purpose of this instance？（）A This instance is being used to manage the operating system files.B This instance is being used to manage the files of other databases.C This instance is being used to manage the instances of other databases.D This instance is being used to manage the background processes of other instances.
单选题
You have been assigned to manage a set of databases. The previous DBA did not leave you notes regarding the structure of each of the databases. While analyzing an instance， you notice that the system identifier （SID） for the instance is set to ’+ASM’. What is the purpose of this instance？（）
A
This instance is being used to manage the operating system files.
B
This instance is being used to manage the files of other databases.
C
This instance is being used to manage the instances of other databases.
D
This instance is being used to manage the background processes of other instances.
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