单选题john has created a database library, librarians are responsible for adding new information to the db library. which one of the following minimum level of access he can grant the librarians of the db library?（）A readerB authorC managerD designer
单选题
john has created a database library, librarians are responsible for adding new information to the db library. which one of the following minimum level of access he can grant the librarians of the db library?（）
A
reader
B
author
C
manager
D
designer
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