On August 8, 2020, Sam, single, age 62, sold for $210,000 his principal residence, which he has lived in for 10 years, and which had an adjusted basis of $60,000. On November 1, 2020, he purchased a new residence for $80,000. For 2020, Sam should recognize a gain on the sale of his residence of: a.$130,000 b.$25,000 c.$50,000 d.$0 e.None of these choices are correct.