题目内容：
请根据以下内容回答题：Abouttwentyofushadbeenfortunateenoughtoreceiveinvitationstoafilm-studio（影棚）totakepartinacrowd-scene.Althoughour"act"wouldlastonlyforashorttime,wecouldseequiteanumberofinterestingthings.
Weallstoodatthefarendofthestudioasworkmenpreparedthescene,settinguptreesattheedgeofawindingpath.Verysoon,brightlightswereturnedonandthebigmovie-camerawaswheeledintoposition.Thedirectorshoutedsomethingtothecameraoperatorandthenwenttospeaktothetwofamousactorsnearby.Sinceitwashotinthestudio,itcameasasurprisetoustoseeoneoftheactorsputonaheavyovercoatandstartwalkingalongthepath.Abigfanbeganblowingtinywhitefeathersdownonhim,andsoonthetreeswerecoveredin"snow".Twomorefanswereturnedon,anda"strongwind"blewthroughthetrees.Thepicturelookedsorealthatitmadeusfeelcold.
Thenextscenewasacompletecontrast(对比).Thewayitwasfilmedwasquiteunusual.PicturestakenonanislandinthePacificwereshownonaglassscreen.Anactorandactressstoodinfrontofthescenesothattheylookedasiftheywereatthewater'sedgeonanisland.Byasimpletricklikethis,palmtrees,sandybeaches,andblue,clearskieshadbeenbroughtintothestudio!
Sinceitwasourturnnext,wewereleftwonderingwhatscenewouldbepreparedforus.Forafullthreeminutesinourliveswewouldbeexperiencingtheexcitementofbeingfilm”Stars”!
Whoistheauthor? A．Acamerama
B．Afilmdirecto
C．Acrowd-sceneactor
D．Aworkmanforscenesetting
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