The following cost data for the year just ended pertain to Sentiments, Inc., a greeting card manufacturer

Required:
1. Compute each of the following costs for the year just ended:

(a) total prime costs,

(b) total manufacturing overhead costs,

(c) total conversion costs,

(d) total product costs, and

(e) total period costs.
2. One of the costs listed above is an opportunity cost. Identify this cost, and explain why it is an opportunity cost.

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Direct material.. $2,100,000 Advertising expense.. 99,000 Depreciation on factory building. 115,000 Direct labor: wages.. 485,000 Cost of finished goods inventory at year-end... 115,000 Indirect labor: wages. 140,000 Production supervisor's salary... 45,000 Service department costs*... 100,000 Direct labor: fringe benefits... Indirect labor: fringe benefits. Fringe benefits for production supervisor.... Total overtime premiums paid. Cost of idle time: production employees.. Administrative costs. Rental of office space for sales personnel.. Sales commissions........ 95,000 30,000 9,000 55,000 40,000 150,000 15,000 5,000 10,000 Product promotion costs.. *All services are provided to manufacturing departments. Cost of idle time is an overhead item; it is not included in the direct-labor wages given above. *The rental of sales space was made necessary when the sales offices were converted to storage space for raw material.