x)= x​ +3. Find the inverse of f(x) and its domain.
A.f−1(x)=x2−3f −1 (x)=x 2 −3; x ≥ 3
B.f−1(x)=(x−3)2f −1 (x)=(x−3) 2 ; x ≥ 0
C.f−1(x)=(x−3)2f −1 (x)=(x−3) 2 ; x ≥ 3
D.f