In Crawford Company, the predetermined overhead rate is $$80 \%$$ of direct labor cost. During the month, $$\$ 210,000$$ of factory labor costs are incurred, of which $$\$ 180,000$$ is direct labor and $$\$ 30,000$$ is indirect labor. Actual overhead incurred was $$\$ 200,000$$. The amount of overhead debited to Work in Process Inventory should be:
a. $$\$ 120,000$$.
c. $$\$ 168,000$$.
b. $$\$ 144,000$$.
d. $$\$ 160,000$$.