Answer:
C. $50,000
Explanation:
Under IFRS section IAS 36, an impairment loss results from an asset's carrying value being lower than its fair market value or value in use. In this case, the fair market value of the asset (the price at which it could be sold) is $300,000, while its value in use is $400,000 (discounted to present value). In order to calculate the impairment loss, we must use the highest, in this case the value in use.
Impairment loss = $450,000 (carrying value) - $400,000 (value in use) = $50,000