Which of the Following Accurately Indicates Part of the Process

Which of the following accurately indicates part of the process by which the slave trade was ended in the North Atlantic?

A) The Dutch persuaded the French and other European governments to prohibit the slave trade.
B) The United States was the first North Atlantic power to prohibit the slave trade, and others followed its lead.
C) Britain posted a naval squadron off the coast of West Africa to prevent any slave trade north of the equator.
D) European and American revolutionaries all agreed that free wage labor was inherently more productive than forced labor.