YouarecreatinganASP.NETWebsite.Thesitecontainspagesthatareavailabletoanonymoususers.ThesitealsocontainsapagenamedPremium.aspxthatprovidespremiumcontenttoonlymembersofagroupnamedSubscribers.Youneedtomodifytheweb.configfiletoensurethatPremium.aspxcanbeacces

YouarecreatinganASP.NETWebsite.Thesitecontainspagesthatareavailabletoanonymoususers.ThesitealsocontainsapagenamedPremium.aspxthatprovidespremiumcontenttoonlymembersofagroupnamedSubscribers.Youneedtomodifytheweb.configfiletoensurethatPremium.aspxcanbeaccessedbyonlymembersoftheSubscribersgroup.Whichconfigurationshouldyouuse？（）

A.<locationpath="Premium.aspx"><system.web><authorization><allowusers="Subscribers"/><denyusers="*"/></authorization></system.web></location>

B.<locationpath="Premium.aspx"><system.web><authorization><allowroles="Subscribers"/><denyusers="*"/></authorization></system.web></location>

C.<locationpath="Premium.aspx"><system.web><authorization><allowroles="Subscribers"/><denyusers="?"/></authorization></system.web></location>

D.<locationpath="Premium.aspx"><system.web><authorization><denyusers="*"/><allowroles="Subscribers"/></authorization></system.web></location>