Sandhill Company had the following assets and liabilities on the dates indicated. December 31 Total Assets Total Liabilities 2019 $477,000 $221,000 2020 $537.000 $271,000 2021 $667,000 $371,000 Sandhill began business on January 1, 2019, with an investment of $100,000. From an analysis of the change in owner's equity during the year, compute the net income (or loss) for: (a) 2019, assuming Sandhill's drawings were $23.000 for the year. for 2019 $ (b) 2020, assuming Sandhill made an additional investment of $49,000 and had no drawings in 2020. for 2020 $ (c) 2021, assuming Sandhill made an additional investment of $23,000 and had drawings of $23,000 in 2021. for 2021 $ $