Vallin Manufacturing Corporation$$s beginning work in process inventory consisted of $10,000$ units, $100\%$ complete with respect to materials cost and $60\%$ complete with respect to conversion costs. The total cost in the beginning inventory was $$56,000.$ During the month, $60,000$ units were transferred out. The equivalent unit cost was computed to be $$4\mathrm{.}50$ for materials and $$5\mathrm{.}00$ for conversion costs under the weighted$-$average method. Given this information, the total cost of the units completed and transferred out was:

Multiple Choice

$$570,000$

$$384,000$

$$385,600$

$$456,000$