Albert Company Reported the Following Statement of Financial Position Amounts

Albert Company reported the following statement of financial position amounts at December 31, 20X2: $$\begin{array} { | l | r | } \hline \text { Current assets } & \$ 70,000 \\\hline \text { Current liabilities } & 40,000 \\\hline \text { Long-term liabilities } & 90,000 \\\hline \text { Operational assets } & 200,000 \\\hline \text { Common shares (10,000 shares issued) } & 100,000 \\\hline\end{array}$$ What was the total amount of retained earnings on December 31, 20X2?

A) $20,000
B) $30,000
C) $40,000
D) $50,000