What is the best way to describe a premium?

A、Apremiumisalwaysgivenfreeasagoodwillitem.
B、Apremiumisearnedbyarecipientforperformingsomeactionadvantageoustotheadvertiser.
C、Apremiumislessvaluablethananadvertisingspecialty.
D、Apremiumencompassesthephysicalappearanceofthecontainerandincludesdesign,color,shape,labeling,andmaterials.
E、Apremiumincludesproductpackagingandtrade-showboothsandexhibits.