William and Kate married in 2016 and purchased a new home together. Each had owned and lived in separate residences for the past 5 years. William's adjusted basis in his old residence was $200,000; Kate's adjusted basis in her old residence was $120,000. In late 2016, William sells his residence for $500,000 while Kate sells her residence for $190,000. What is the total gain to be excluded from these transactions in 2016?
◦ $0
◦ $250,000
◦ $320,000
◦ $370,000