If g-1(y) is the inverse of g(x), which statements must be true?
check all that apply.

a. the range of g-1(y) is the domain of g(x).
b. the range of g-1(y) is the range of g(x).
c. g-1(g(x)) = x
d. g(g-1(x)) = x
e. the domain of g-1(y) is the domain of g(x).
f. the domain of g-1(y) is the range of g(x).