Answer and Explanation:
The journal entry is shown below:
Asset $42 million
To Accumulated Depreciation $18 million ($42 ÷ 7 years × 3 years)
To Retained earning $24 million ($42 ÷ 7 years × 4 years)
(Being the correct entry is recorded)
The asset is debited as it increased the asset and accumulated depreciation & retained earning is credited as it decreased the assets but increased the stockholder equity