Product Costing Method Discussion

I need an explanation for this Accounting question to help me study. Use the Internet to access the website for Weyerhaeuser (www.weyerhaeuser.com), International Paper (www.internationalpaper.com), or Boise Cascade (www.boisecascade.com).Required: Skim over the information presented on the website about the company’s products and operations. Then discuss why process costing is an appropriate product-costing method for this company.