What Is the Theory of Hegemonic Stability

What is the theory of hegemonic stability?

A) The spread of free trade throughout the world will lead to a stable single trading system.
B) The longer countries keep their free-trade policies,the more likely they are to remain pro-free trade.
C) Having one single hegemonic source of information can improve the chances of stability in international trade.
D) One large state that is willing and powerful enough can solve the collective action problems of international trade.