When the nation of Ectenia opens itself to world trade in coffee beans, the domestic price of coffee beans falls. Which of the following describes the situation?

a Domestic production of coffee rises, and Ectenia becomes a coffee importer b Domestic production of coffee rises, and Ectenia becomes a coffee exporter c Domestic production of coffee falls, and Ectenia becomes a coffee importer d Domestic production of coffee falls, and Ectenia becomes a coffee exporter