Answer:
Option A is the correct answer as both the depreciation expense and the book value at the end of 2021 is $22500
Explanation:
The double declining balance method is an accelerated form of charging/allocating the depreciation of asset to the income statement as an expense. It charges a higher depreciation expense in the initial years of the asset's life and a lower depreciation expense in the later years.
The formula to calculate the depreciation for the period under this method is,
Depreciation expense = 2 * [(Cost - Accumulated depreciation) / Useful life of the asset]
Depreciation expense 2021 = 2 * [(45000 - 0) / 4]
Depreciation expense 2021 = $22500
Book value = Cost - Accumulated depreciation
Book Value 2021 = 45000 - 22500 = $22500