Exercise 4-4 Crane, Inc., manufactures clamps used in the overhead bin latches of several leading airplane models. Greg Poole, president of Crane, Inc., has gathered the following cost information from the company's accounting records for the latest month of operations Advertising Fire insurance premium for the factory building Sales office utilities Air filters for the buffing machines used to produce the clamps $1,500 Aluminum used to produce the clamps Rent on the factory building Freight to ship the clamps to customers Sales department executives' salaries Production supervisors' salaries Assembly line workers' wages $20,000 $5,000 $2,000 $30,000 $8,000 $2,500 $32,000 $15,000 $45,000 (a) Calculate the total period costs for the month Total period costs $ (b) Calculate the total product costs for the month Total product costs $