Suppose a firm bought a new machine for $30,000 that will be depreciated using MACRS depreciation schedule for a 5-year recovery period (see the schedule below). Calculate the remaining book value at the end of year 3. Year MACRS(%) 1 20.00 2 32.00 3 19.20 4 11.52 5 11.52 6 5.76 $1,728 O $21,360 $23,088 $8,640