The Financial Statements of Tin Company Included the Following $$\begin{array} { l r } \text { Sales } & \$ 1,000,000 \\\text { Gross margin } & 300,000 \\\text { Ending Irventory } & 100,000\end{array}$$

The financial statements of Tin Company included the following:
$$\begin{array} { l r } \text { Sales } & \$ 1,000,000 \\\text { Gross margin } & 300,000 \\\text { Ending Irventory } & 100,000\end{array}$$
Based on the information provided,what was the company's cost of goods sold?

A) $200,000
B) $600,000
C) $700,000
D) $900,000