According to the Institution-Based View,why Do Nations Benefit from International

According to the institution-based view,why do nations benefit from international trade?

A) Because some firms in one nation generate exports that are valuable,unique,and hard to imitate that firms from other nations find it beneficial to import.
B) Because governments actively protect domestic industries from imports and vigorously promote exports.
C) Because different rules governing trade are designed to determine how economic gains from international trade are shared.
D) Because the wealth of the world (measured in gold and silver) is fixed and a nation that exports more than it imports will enjoy the net inflows of gold and silver and become richer.