A relation contains the points (1, 2), (2, -1), (3, 0), (4, 1), and (5, -1). Which statement accurately describes this relation? A The relation does not represent y as a function of x, because each value of x is associated with a single value of y. B The relation represents y as a function of x, because one value of y is associated with two values of x. C The relation does not represent y as a function of x, because each value of y is associated with two values of x.