Which of the following pairs of functions are inverses of each other?
O A. f(x)=8x² +6 and g(x)=^3√x-6/8
B. f(x)=^3√x+9-2 and g(x) = (x+9)³ +2
C. f(x)=x+2/9and g(x)= (9x - 2)³
D. f(x)=3x³ +7 and g(x) = x\3 -7