August 8,2018, Sam, single, age 62, sold for $210,000 his principal residence, whic years, and which had an adjusted basis of $60,000. On Novbee of 1, 2018, he purchased a new residence for $80,000. For 2018, Sam should a. $0 b. $25,000 c. $50,000 d. $130,000 e. None of the above a gain on the sale of his residence of