f(x) = √ x – 5. Find f¹(x) and its domain.
A. ƒ¯¹ (x) = (x + 5)² ; x ≥ 0
B. ƒ−¹ (x) = (x + 5)²; x ≥ −5
C. f-¹ (x) = x² + 5; x≥ 0
D. f¹(x) = x² +5; x≥-5