单项选择题

A.Between lines 01 and 02, you should insert the WITH EXECUTE AS 'dbo' clause. 
B.Between lines 01 and 02, you should insert the EXECUTE AS USER = 'dbo' statement. 
C.You should give the user the ALTER permission on the Service schema 
D.You should give the CREATE TABLE permission and permit the user to drop the Service.Table table. 

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