On January 1, Year 1, Marino Moving Company paid $48,000 cash to purchase a truck. The truck was expected to have a four-year useful life and an $8,000 salvage value. Marino uses the straight-line method. On January 1, Year 3, Marinos accounting records contained the following balances:

Truck 48,000

Acc. Dep. (20,000)

Also, on January 1, Year 3 the company paid $10,000 to replace the engine to make the truck better by enabling it to operate using less expensive natural gas. Which of the following shows the account balances after the engine replacement on January 1, Year 3?