39. Refer to Bellingham Incorporated's December 31, 2019 Balance Sheet shown below.
\begin{tabular}{|c|c|c|c|}
\hline \multicolumn{4}{|c|}{\begin{tabular}{l}
Bellingham Incorporated \\
Balance Sheet as of December 31, 2019
\end{tabular}} \\
\hline Assets & & Liabilities & \\
\hline Current Assets & & Current Liabilities & \\
\hline Cash & \( \$ 130,000 \) & Accounts Payable & \( \$ 90,000 \) \\
\hline Inventory & 80,000 & Notes Payable & 110,000 \\
\hline Accounts Receivables & 40,000 & Total Current Ulabilities & \( \$ 200,000 \) \\
\hline \multirow[t]{2}{*}{ Total Current Assets } & \( \$ 250,000 \) & Non-current Liabilities & \\
\hline & & Debt & 150,000 \\
\hline Non-current Assets & & Owner's Equity & \\
\hline Plant and Equipment (Net) & 350,000 & Common Stock & 220,000 \\
\hline Patents (Net) & 50,000 & Retained Earnings & 80,000 \\
\hline Total Assets & \( \$ 650,000 \) & Total Uabilities and Owner's Equity & \( \$ 650,000 \) \\
\hline
\end{tabular}
Bellingham began 2019 with \( \$ 240,000 \) in owner's equity. During the year they issued \( \$ 30,000 \) in new common stock and paid \( \$ 10,000 \) in dividends. If their net income for 2019 was \( \$ 40,000 \), what was their retained earnings balance on December 31, 2018?
\( \$ 30,000 \)
\( \$ 50,000 \)
\( \$ 60,000 \)
\( \$ 70,000 \)