Someone just robbed a bank. the police set a triangular perimeter of 16 kilometers where the robber may be hiding. two of the three coordinates for this triangular perimeter are (2,2) and (-2,-1). the area covered is 12 square kilometers. which of the following is the third coordinate of the triangular perimeter?

a. (2,-4)
b. (-2,4)
c. (2,8)
d. (6, -4)