Identifying product costs, period expenses, and assets. Indicate whether each of the following costs is (1) a period expense, (2) a product cost, or (3) some balance sheet account other than those for product costs:

a. Office supplies used

b. Salary of the factory supervisor

c. Purchase of a fire insurance policy on the store building for the three-year period beginning next month

d. Expiration of one month's protection of the insurance in part \(\mathbf{c}\)

e. Property taxes for the current year on the factory building

f. Wages of truck drivers who deliver finished goods to customers g. Wages of factory workers who install a new machine h. Wages of mechanics who repair and service factory machines i. Salary of the president of the company j. Depreciation of office equipment k. Factory supplies used