Emerging Dock Company Manufactures Boat Docks on an Assembly Line $20 X 5$

Emerging Dock Company manufactures boat docks on an assembly line.Its standard costing system uses two cost categories,direct materials and conversion costs.Each product must pass through the Assembly Department and the Finishing Department.Direct materials are added at the beginning of the production process.Conversion costs are allocated evenly throughout production. Data for the Assembly Depatment for Maj $20 X 5$ are:
Work in process, beginning inventory: $\quad\quad\quad\quad70 \text { uncits }$
Direct materials ( $100 \%$ complete)
Conversion costs ( $25 \%$ complete)

$\text { Units started during May } \quad \quad \quad \quad 40 \text { units }$

$\text { Work in process, ending inventory: } \quad 10 \text { units }$
Direct materials (100\% complete)
Conversion costs ( $50 \%$ complete)

$\text { Costs for May: }$
$\begin{array}{l}\text { Standard costs for Assembly: }\\\begin{array}{lr}\text { Direct materials } & \$ 8,000 \text { per unit } \\\text { Conversion costs } & \$ 32,000 \text { per unit }\end{array}\end{array}$

$\begin{array}{l}\text { Work in process, beginuing inventory: }\\\begin{array}{ll}\text { Direct materials } & \$ 280,000 \\\text { Conversion costs } & \$ 520,000\end{array}\end{array}$

What is the balance in ending work-in-process inventory?

A) $164,000
B) $240,000
C) $310,000
D) $340,000