Chirp Chirp Industries makes custom deluxe birdhouses. Below is a list of some of the products that are used to construct these birdhouses. b and then determine if these costs are producDetermine if these costs are fixed or variable costs,t costs or period costs. $$10,000$ per month $-$ rent for office building $$6,000$ per year $-$ depreciation for building equipment $$3,000$ per month $-$ Selling and Administrative Costs $$25$ per board foot $-$ wood to make the birdhouses $$65,000$ per year $-$ salary for shop supervisor Dependent on order $-$ glue, paint, and other materials to build the houses $$15$ per hour $-$ factory labor to build the houses"$-$ $$65000$ per year, salary for shop supervisor, is it variable or Fixed cost? $$3000$ per month selling and administrative cost, is it variable or fixed cost? the answer is written wrong.