YouhavetwoserversnamedFC1andFC2thatrunWindowsServer2008EnterpriseEdition.BothservershavetheFailoverClusteringfeatureinstalled.Youconfiguretheserversasatwo-nodecluster.TheclusterrunsanapplicationnamedAPPBusinesshoursforyourcompanyare0900to1700.APP1mustbeavailableduringthesehours.YouconfigureFC1asthepreferredownerforAPPYouneedtopreventfailbackoftheclusterduringbusinesshours.Whatshouldyoudo？（）
A.SetthePeriodoptionto8hoursintheFailoverproperties.
B.SettheAllowfailbackoptiontoallowfailbackbetween17and9hoursintheFailoverproperties.
C.EnablethePreventfailbackoptionintheFailoverproperties.
D.EnabletheIfresourcefails，attemptrestartoncurrentnodepolicyforallAPP1resources.Setthemaximumrestartsforspecifiedperiodto0.
参考答案：B
