Which Statement Is True Concerning Impairment Testing of Identifiable Intangible

Which statement is true concerning impairment testing of identifiable intangible assets, following U.S. GAAP?

A) For limited life intangibles, the impairment loss is the difference between the sum of undiscounted expected cash flows and book value.
B) If the sum of undiscounted expected cash flows is less than book value, the impairment loss calculation for limited life intangibles is the same as for indefinite life intangibles.
C) A qualitative test may be used for limited life intangibles but not indefinite life intangibles.
D) A qualitative test may be used for both limited life and indefinite life intangibles.