Mazaya Company bought equipment on January 1, 2011. The equipment cost R.0.180,000 and had an expected residual value of R.0.30,000. The life of the equipment was estimated to be 6 years. The accumulated depreciation for the year ending 2013, using the straight-line method of depreciation is Select one: a. R.0.75,000. O b.R.0.45,000 cR0.50,000 d. R.O.25.000