Classify each of the following costs as Product (direct/indirect) or Period and Variable, Fixed or Mixed.

Classify each of the following costs as Product (direct/lindirect) or Period and Variable, Fixed or Mixed. Costs Product-direct Raw materials Staples used to secure packed boxes of product Plant janitors' wages Order processing clerks' wages ariak Product-indirect Fixed Period Variable Production workers' wages Production supervisors' salaries Sales force commissions Maintenance supplies used President's salary Electricity cost for office building Real estate taxes for Factory Real estate taxes for Office building Period Fixed