Sarah, who has been in the business of erecting, maintaining, and renting outdoor advertising displays for 18 years, has an offer to purchase her business. Two basic types of advertising displays are used in her business: structure X and structure Y. Structure X consists of a single sign face nailed to a wooden support frame and attached to wooden poles 30 feet long. Its structure is rather easy to dismantle and move from one location to another. In contrast, structure Y is a permanent sign that is designed to withstand winds of up to 100 miles per hour. None of the Structure Y signs have ever been moved. What tax issues should Sarah consider?