The following graph shows the domestic supply and demand curves for a good. S1 and S2 represent the domestic industry supply before and after the provision of a subsidy by the government respectively, while D represents the domestic demand for the product. Prior to the subsidy, the country was importing 300 units of the good. Refer to the graph to answer the question. 
At the world price, the quantity supplied by the domestic industry prior to the subsidy is:
Definitions:
Gold Mining Company
A company that specializes in the exploration and extraction of gold from mines or ore bodies.
Industry Competition
The rivalry among companies within the same industry to gain more market share, customers, or profits.
Economy State
The current conditions and overall health of a country's economy, influenced by factors such as GDP growth, unemployment rates, and inflation.
Required Return
The minimum return an investor expects to achieve on an investment, considering its risk.
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