The difference in testing for impairment of a finite-life versus indefinite life intangible asset is:

a. The measure of an impairment loss for an indefinite life in tangible assets is not based on book value

b. Subsequent recovery of an impairment loss as allowed for a finite life intangible asset

c. The cash flow recover ability test is omitted for an indefinite life intangible asset

d. Companies are not required to recognize impairment losses on finite life and tangible assets