Determine Whether the Function Has an Inverse Function $g ^ { - 1 } ( x ) = \frac { 7 } { x }$

Multiple Choice

Determine whether the function has an inverse function.If it does,find the inverse function. ?
G(x) = x⁷
?

A) $g ^ { - 1 } ( x ) = \frac { 7 } { x }$
B) g^-1(x) = -7x
C) ? $$g ^ { - 1 } ( x ) = - \frac { x } { 7 }$$
D) g^-1(x) = 7x
E) The inverse exists,but none of the above