Fairwings Avionics is a company that manufactures sophisticated radar sets for commercial aircraft. For the purpose of p

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Fairwings Avionics is a company that manufactures sophisticated
radar sets for commercial aircraft. For the purpose of preparing
its external financial reports, which of the following statement
about cost classification is FALSE?
Telephone expenses incurred by factory management is a product
cost.
Travelling expenses of the sales team is a period cost.
Annual depreciation of the equipment in the fitness room used by
factory workers is a period cost.
Annual health insurance premiums for factory personnel is a
product cost.