What is the range of the following relation?
{(-1, 1), (-2, 2), (-3, 3), (-4, 4), (-5, 5)}


-{-1, -2, -3, -4, -5}
-{1, 2, 3, 4, 5}
-{-1, -2, -3, -4, -5, 1, 2, 3, 4, 5}