EB$11.11\mathrm{.}4$ The following intangible assets were purchased by Hanna Unlimited: A$.$ A patent with a remaining legal life of twelve years is bought, and Hanna expects to be able to use it for six years. It is purchased at a cost of $$48,000.$ B$.$ A copyright with a remaining life of thirty years is purchased, and Hanna expects to be able to use it for ten years. It is purchased for $$70,000.$ Determine the annual amortization amount for each intangible asset.