单项选择题billhasanauthornamesfieldnamedalleditorsthatcalculatesalistofpossibleeditorsofthedocbasedonvaluesusershasenteredintoanotherfield.Thelistonlycontainsusers’firstandlastnames,andonlyshouldbedisplayedtouserswhocaneditdoc.Whichofthefollowinghide-whenformulasshouldbillusetocontrolthedisplayofthefield?()
A. @isnotmember(alleditors,@username)
B. @isnotmember(@name([cn]);@username)
C. @isnotmember(alleditors;@name([cn ];@username))
D. if(@isnotmember(alleditors;@name([cn];@username);@true;@false))