Regarding impairment of intangible assets, which of the following statements is incorrect?

A$.$Intangible assets with an indefinite life are tested for impairment annually.

B$.$If any impairment$$ occurs, the company records a loss in the period in which the intangible asset was acquired.

C$.$Impairment occurs when the fair value of an intangible asset is less than the book value.

D$.$Intangible assets are impaired when there has been a permanent decline in the value of the asset.