Given the graph of f(x), determine the range of f−1(x).

Rational function with one piece increasing from the left in quadrant 2 asymptotic to the line y equals 2 and passing through the point 0 comma 3 and asymptotic to the line x equals 1 and another piece increasing from the left in quadrant 4 asymptotic to the line x equals 1 passing through the point 2 comma 1 asymptotic to the line y equals 2.

ℝ
(−∞, 1) ∪ (1, ∞)
(−∞, 2) ∪ (2, ∞)
(1, ∞)