Goodwill recognized in a business combination must be allocated among a firm’s identified reporting units. If the fair value of a particular reporting unit with recognized goodwill falls below its carrying amount, which of the following is true?

a. No goodwill impairment loss is recognized unless the implied value for goodwill exceeds its carrying amount.

b. A goodwill impairment loss is recognized if the carrying amount for goodwill exceeds its implied value.

c. A goodwill impairment loss is recognized for the excess of a reporting unit’s carrying amount over its fair value, not to exceed the carrying amount of goodwill.

d. The reporting unit reduces the values assigned to its long-term assets (including any unrecognized intangibles) to reflect its fair value.