The co-ordinates of the centroid of a triangle ABC are (2, 2). What are the co-ordinates of vertex C if co-ordinates of A and B are (7, -1) and (1, 2) respectively?

The co-ordinates of the centroid of a triangle ABC are (2, 2). What ar

1.	The co-ordinates of the centroid of a triangle ABC are (2, 2). What are the co-ordinates of vertex C if co-ordinates of A and B are (7, -1) and (1, 2) respectively?
A.	(-2, 5)
B.	(2, 5)
C.	(-2, -5)
D.	(2, -5)
Answer» B. (2, 5)