YouhaveanExchangeServer2010Mailboxserver.AllusersuseMicrosoftOfficeOutlook2010toaccesstheirmailboxes.Youimplementapolicythatautomaticallydeletese-mailmessagesthatareolderthan90days.Youneedtoprovideuserswithanalternatelocationtostoreemailmessagesthatareolderthan90days.Administratorsmustbeabletofindthemessagesinbothlocationswhentheyperformmulti-mailboxsearches.Whatshouldyoucreate？（）
A.a.pstfileforeachuserthatisstoredinasharedfolder
B.aPersonalArchiveforeachuser
C.ajournalrule
D.aRetentionPolicy
参考答案：B
