Arnold who is single sold his principal residence on April 10, 2014 and excluded the realized gain under section 121 (exclusion on the sale of a principal residence) On April 12, 20141, he purchased another principal residence, which he sells on January 12, 2015 for a realized gain of $80,000. Can Arnold exclude the $80,000 realized gain on the January 2015 sale if his reason for selling was