ClicktheExhibitbutton.Assumingthetaglibraryintheexhibitisimportedwiththeprefixstock,whichcustomtaginvocationoutputsthecontentsofthevariableexposedbythequotetag?()

A.<；stock：quote&ensp；symbol="；SUNW"；&ensp；/>；${var}

B.${var}.&ensp；<；stock：quote&ensp；symbol="；SUNW"；&ensp；/>；

C.<；stock：quote&ensp；symbol="；SUNW"；>；.&ensp；${var}.&ensp；<；/stock：quote>；

D.<；stock：quote&ensp；symbol="；SUNW"；&ensp；var="；quote"；&ensp；/>；${quote}