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Which statements describe the capabilities of the DBMS_NETWORK_ACL_ADMIN package?（）
A:It can be used to allow the access privilege settings for users but not roles.
B:It can be used to allow the access privilege settings for users as well as roles.
C:It can be used to control the time interval for which the access privilege is available to a user.
D:It can be used to selectively restrict the access for each user in a database to different host computers.
E:It can be used to selectively restrict a user's access to different applications in a specific host computer.

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出自：Oracle认证

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