Lanyard Company Uses a Job-Order Costing System to Account for Product

Lanyard Company uses a job-order costing system to account for product costs. The following information pertains to 2018: $$\begin{array} { l r } \text { Materials placed into production } & \$ 140,000 \\\text { Indirect labor } & 40,000 \\\text { Direct labor (10,000 hours) } & 160,000 \\\text { Depreciation of factory buil ding } & 60,000 \\\text { Other factory overhead } & 100,000 \\\text { Increase in work-in-process inventory } & 30,000\end{array}$$
Factory overhead rate is $18 per direct labor hour.
What is the total amount credited to Materials Inventory for Lanyard in 2018?

A) $480,000
B) $170,000
C) $140,000
D) $110,000