Nelsоn Whiting (single) purchаsed а hоme in Denver, Cоlorаdo, for $300,000. He moved into the home on July 1 of year 1. He lived in the home as his primary residence until December 1, year 2, when he sold the home for $450,000. Nelson sold the home because he needed to move to change jobs and his new job was located several hundred miles away. What amount of gain must Nelson recognize on the home sale in year 2?