A plant asset t was purchased on January 1 for $50,000 with an estimated saivage vaue on $10,000 at the end of its useful life. The current year's Depreciation Expense is $5,000 calculated on the straight-line basis and the balance of the Accumulated Depreciation account at the end of the year is $25,000. The remaining useful life of the plant asset is 10 years 8 years. 5 years 3 years