A machine with a cost of $80,000 has an estimated salvage value of $5,000 and an estimated life of 5 years or 15,000 hours. It is to be depreciated by the units-of-activity method. What is the amount of depreciation for the second full year, during which the machine was used for 5,000 hours?

a)5,000

b)26,667

c)15,000

d)25,000