Answer: Option C
Explanation: In simple words impairment loss means there is reduction in the goodwill account. It is calculated as follows.
1. First the fair value of goodwill is compared with its carrying value.
2. If the fair value comes to be less than carrying value then impairment loss is calculated by subtracting fair value from carrying value.
Thus, impairment loss will be calculated only if the fair value of the asset is less than its carrying value.