Final answer:
The annual depreciation expense for the first and second years using the straight-line method is $9,250.
Step-by-step explanation:
The annual depreciation expense for the first and second years using the straight-line method can be calculated by subtracting the salvage value from the cost and dividing the result by the useful life of the truck.
For the first year:
Depreciation expense = (Cost - Salvage value)/Useful life = ($43,000 - $16,000)/4 = $9,250
For the second year:
Depreciation expense = (Cost - Salvage value)/Useful life = ($43,000 - $16,000)/4 = $9,250
Therefore, the correct answer is (a) $9,250 and $9,250.