Partner Spence had the following items reported on a partnership Schedule K-1 Ordinary income Interest income Dividend income Guaranteed payment Section 179 expense Cash distribution $57000 4,900 5,300 15,000 16,000 20,000 Spence had a basis in his partnership interest of $23,000 at the beginning of the year. What is Spence's basis in his partnership interest at the end of the year? O $21,000 O $31,200 O $54.200 O $70,200