A plant asset cost R.0.192,000 and is estimated to have a R.0.24,000 residual value at the end of its 8-year useful life. The book value of the asset at the end of the third year using the double- declining-balance method would be Select one: O a. R.0.108,000. O b.R.O.144,000. o C.R.O.27,000 O d.R.O.81,000