Please help me with this question and get me the correct answer please
What does the following information imply about the nature of the slave trade after the year 1808?
Between 1820 and 1870, the British navy captured over 1,500 slave ships. The navy freed and returned around 150,000 Africans. The British only stopped about 10% of the enslaved African Americans shipped from Africa.
A.
It was easy for the British navy to stop most illegal enslavers from making it to the Americas.
B.
It was difficult for the British navy to stop most illegal enslavers from making it to the Americas.
C.
Cooperation with Portuguese and Spanish officials helped the British curb the flow of slave ships.
D.
Most of the slave ships were Portuguese or Spanish; these countries refused to cooperate with the British.