How Did the British Organize the Shipment of Slaves to the Americas

How did the British organize the shipment of slaves to the Americas?

A) In Britain, unlike elsewhere, the slave trade was carried out by uncontrolled private venture.
B) In Britain, the chartered Royal African Company was granted a monopoly over the shipment of slaves to colonies in the Americas.
C) The British refused to participate in the slave trade and attempted to intercept shipments of slaves to the Americas beginning in the 1660s.
D) The British government directly participated in the slave trade through use of the Royal Navy.