Pharoah incurred the following costs while manufacturing its product: Materials used in production, $137000; factory depreciation, $77000; property taxes on the administrative offices, $29000; labor costs of assembly-line workers, $112000; factory supplies used, $25000; advertising expense, $30000; property taxes on the factory, $37000; delivery expense, $40000; salaries of the sales staff, $70000; and sales commissions, $34000. The total product costs for Pharoah are

a. $527000.

b. $591000.

c. $417000.

d. $388000.