For each of the following costs incurred in a manufacturing firm, indicate whether the costs are fixed (F) or variable (V) and whether they are period costs (P) or product costs (M) under full absorption costing.
a. Chief financial officer’s salary.
b. Depreciation on pollution control equipment in the plant.
c. Office supplies for the human resources manager.
d. Power to operate factory equipment.
e. Commissions paid to sales personnel.