Classify the costs below as product costs or period costs. Also classify the costs as variable or fixed with respect to the volume of production.

What inferences do you draw about the correspondence between the two concepts?

Sales commissions

Sales manager salary

Distribution costs

Production supervisor

Factory rent

Corporate office expenses

Product components

Supplies used in manufacturing

Direct manufacturing labor

Plant manager salary

**"factory rent" is period or product cost?? I'm having trouble because some sources are saying one or other can't decide which.