单项选择题

A.Update all statistics on Table1 in DB1.
B.Use the CREATE STATISTICS statement in DB1 to create missing statistics on col3of Table1.
C.Set the priority boost server option to 1.
D.Execute the following statement.USE DB1GOCREATE INDEX index1 ON table1(col3)INCLUDE(col1, col2) WITH (ONLINE = ON)GO