which function, g or h, is the inverse function for function f?

A. The function g because the graphs of f and g are symmetrical about the line y=x
B. The function h because the graphs of f and h are symmetrical about the line y=x
C. The function g because the graphs of f and g are symmetrical about the x axis
D. The function h because the graphs of f and h are symmetrical about the x-axis