Classify the following costs according to product cost or period cost. Direct material (DM) Direct labour (DL) Overhead (OH) Period costs ( PC) 1. Maintenance of Factory Machines. Format : xx 2. CAMPRO engine for Proton Wira. Format : xx 3. Wages paid to workers in Production Department. Format : xx 4. Factory facility charges. Format : xx 5. Insurance paid to Honda Insurance Premium for CEO vehicle. Format : xx 6. Security guards wages at Gardenia headquarters. Format : xx 7. Radio in a Boeing 777. Format : xx 8. Salary paid to managing director of company. Format : xx