$1.$ Plastic for casing$$$$16,000$

$2.$ Wages of assembly workers$$$$84,000$

$3.$ Property taxes on factory$$$$4,000$

$4.$ Office accounting salaries$$$$35,000$

$5.$ Drum stands$$$$28,000$

$6.$ Rent cost of office for accountants$$$$36,000$

$7.$ Office management salaries$$$$150,000$

$8.$ Annual fee for factory maintenance$$$$14,000$

$9.$ Sales commissions$$$$13,000$

$10.$ Factory machinery depreciation, straight$-$line$$$$42,000$

Problem $18-1$A $($Algo$)$ Part $1$

Required:

$1.$ Classify each cost and its amount as either product or period. The first cost is completed as an example.