If f(x) = (x + 1)2 for x ≥ –1 and g(x) is the function whose graph isthe function whose graph is the reflection of the graph of f(x) withrespect to the line y = x, then g(x) equals to

1) –√x – 1, x ≥ 0
2) (x + 1)⁻², x > -1
3) √x – 1, x ≥ 0
4) √x – 2, x ≥ 1