This Graph Demonstrates the Domestic Demand and Supply for a Good,as

This graph demonstrates the domestic demand and supply for a good,as well as a tariff and the world price for that good.
According to the graph shown,if the economy were operating under free trade,then imposed a tariff,the overall impact on surplus would be:

A) a net loss of IL.
B) a net gain of IJKL.
C) a net loss of IJKL.
D) a net gain of FGHIJKL.