YouworkwithadatabasenamedDB1，whichislocatedonaSQLServer2005computer.YoudiscoverthatatablescanonTable1inDB1causesaslowquery.Table1isaverylargetablethatisusedfrequently.Youascertainthatthequerycontainsthefollowingstatement.SELECTcol1，col2FROMtable1WHEREcol3=Youneedtoprovidemaximumqueryperformance.Table1mustremainavailabletousers.Whatshouldyoudo？（）
A.UpdateallstatisticsonTable1inDB1.
B.UsetheCREATESTATISTICSstatementinDB1tocreatemissingstatisticsoncol3ofTable1.
C.Setthepriorityboostserveroptionto1.
D.Executethefollowingstatement.USEDB1GOCREATEINDEXindex1ONtable1（col3）INCLUDE（col1，col2）WITH（ONLINE=ON）GO