The Figure Given Below Represents the U $0$ $\$ 400$ $\$ 375$

The figure given below represents the U.S. market for steel imports from Korea. The Korean government provides an export subsidy of $25 per ton, and Korean firms use the subsidy to reduce their export price to the United States to $375 per ton. $0$ $\$ 400$ $\$ 375$ Suppose the United States now imposes a countervailing duty on the imports of steel at the rate of $25 per ton. Which of the following is true in this context?

A) The welfare of the world as a whole is reduced by $750 million.
B) The welfare loss of Korea exceeds the welfare gain of the U.S.
C) The producers in the U.S.lose whereas the producers in Korea gain.
D) The world price level and volume of trade becomes similar to the free-trade condition.