Which set of ordered pairs (x, y) could represent a linear function?A = {(-9,4), (-4,1), (2,-2), (7,-5)}B = {(-1,9), (5,7), (7,6), (9,5)}C = {(-3,-3), (0, -1), (2,1), (4,3)}D = {(-5,5), (-1,4), (3,3), (7,2)}