Mirembe Plc uses a weighted$-$average process$-$costing system. They completed $49,000$ units during the month and had $14,800$ units in process at month end, $40\%$ complete. Conversion costs associated with the beginning work$-$in$-$process inventory amounted to $$287,000,$ and amounts that relate to the current month totaled $$974,000.$ If conversion is incurred uniformly throughout manufacturing, Mirembe's equivalent$-$unit cost is: $($a$)$ $$17\mathrm{.}46($b$)$ $$18\mathrm{.}40($c$)$ $$19\mathrm{.}88($d$)$ $$22\mathrm{.}96($e$)$ None of the answers