If a triangle with vertices (1, 1), (2, 2), and (3, 1) is reflected over the y-axis, what are the new coordinates of its vertices?
(1, 1), (2, 2), (3, 1)
(2, 1), (4, 2), (6, 1)
(-1, 1), (-2, 2), (-3, 1)

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