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The co-ordinates of the centroid of a triangle ABC are (1 , -4). What are the co-ordinates of vertex C if co-ordinates of A and B are (3 , -4) and (0 , 5) respectively?

(0 , 13)
(0, 5)
(0, -5)
(0 , -13)

Correct Answer: (0 , -13)

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