（单选题）
View the Exhibit to observe the roles assigned to the SL_REP user. Which statement is true about theassignment of the SELECT_CATALOG_ROLE role to the SL_REP user（）
AThe user must enable the role explicitly.
BThe user can grant the role to other users.
CThe user cannot use the role until the DBA enables it explicitly.
DThe user can start using the role immediately without any changes
正确答案
答案解析
略
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