Summit Company Has Provided the Following Inventory Balances and Manufacturing

Summit Company has provided the following inventory balances and manufacturing cost data for the month of January:
$\begin{array}{|l|r|r|}\hline \text { Inventories: } & \text { January 1 } & \text { January 31 } \\\hline \text { Direct materials } & \$ 30,000 & \$ 40,000 \\\hline \text { Work in process } & 15,000 & 20,000 \\\hline \text { Finished goods } & 65,000 & 50,000 \\\hline\end{array}$
$\begin{array} { | l | r | } \hline & \text { Month of January } \\\hline \text { Cost of goods manufactured } & \$ 515,000 \\\hline \text { Manufacturing overhead applied } & 150,000 \\\hline \text { Direct materials used } & 190,000 \\\hline \text { Actual manufacturing overhead } & 144,000 \\\hline\end{array}$ Under Summit's job-order costing system, any over- or underapplied overhead is closed out to the Cost of Goods Sold account at the end of the calendar year (that is, December 31) .

-How much direct labour cost was incurred during January?

A) $170,000.
B) $175,000.
C) $180,000.
D) $186,000.