A machine with a cost of R.0.160,000 has an estimated residual value of R0.000 and an estimated useful life of 5 years or 15,000 hours. It is to be depreciated using the units-of-activity method of depreciation. What is the closet amount of depreciation for the second full year, during which the machine was used 5,000 hours? Select one: a. R.O.50,000 b.R.O.53.333 CRO.30,000 d.R.O.43.333