Prior to 2022, Z-Mon Corporation had accumulated earnings and profits of $12,000, and during 2022 its net current earnings amounted to $20,000. Enjoying excellent cash flow at the end of 2022, Z-Mon distributed $45,000 cash to its sole stockholder, Pluto, who had purchased his stock for $10,000 several years ago. How is this distribution treated for tax purposes by Pluto?