During 2018, Simpson Limited estimated that the carrying amount of goodwill was impaired by $20 000. In 2019, the company reassessed goodwill and determined that the goodwill initially acquired still existed. The appropriate accounting treatment in 2019 is:

ignore the reversal as it is prohibited by AASB 136 Impairment of Assets.

reverse the previous goodwill impairment loss.

recognise the revalued amount of goodwill by an adjustment against the asset revaluation surplus account.

increase goodwill by an adjustment to retained earnings.