Gthe invacare corporation, an ohio-based manufacturer of wheelchairs and other health care equipment, purchases parts and components worldwide and sells its products in 80 nations. which effect has invacare experienced as a result of international trade? a. design, the purchasing of parts, and final assembly all occur abroad. b. prices for aluminum, steel, rubber, and other materials have increased. c. the company's ohio workforce is less stable. d. the company is better able to withstand decreased sales in the u. s