The correct answer is A. Rs. 17,000.
Depreciation is the process of allocating the cost of an asset over its useful life. The amount of depreciation each year is calculated by dividing the original cost of the asset by its useful life. In this case, the original cost of the asset is Rs. 4,15,000 and its useful life is 20 years. Therefore, the amount of depreciation each year is Rs. 17,000 (Rs. 4,15,000 / 20 years).
Option B is incorrect because it is the amount of depreciation each year if the useful life of the asset is 15 years. Option C is incorrect because it is the amount of depreciation each year if the useful life of the asset is 25 years. Option D is incorrect because it is the amount of depreciation each year if the net residual value of the asset is Rs. 55,000.