Which function is the inverse of ƒ(¹)=√³ - 2?

A) f⁻¹(r)=6r² + 2, for r ≥ 0
B) f⁻¹(r)=6r² - 2, for r ≥ 0
C) f⁻¹(r)=36r + 2, for r > 0
D) f⁻¹(r)=3612 + 2, for r ≥ 0