Which of the Following Was a Reason for an Attack

Which of the following was a reason for an attack by the Cherokees on the Carolina and Virginia frontiers in 1760?

A) The British abrogated their trade agreements with the Cherokees.
B) Both colonies had been capturing and enslaving Cherokees.
C) They were retaliating for British atrocities and the Cherokees realized that after Britain gained the upper hand, they would no longer be able to force concessions from the British by threatening to ally with France or Spain.
D) The governors of both colonies had declared war against the Cherokees.