The option A is showing the domain ans the range of the function F(x) as inverse of F(x).
What is inverse function?
In mathematics, the inverse function of a function f (also called the inverse of f) is a function that undoes the operation of f. The inverse of f exists if and only if f is bijective, and if it exists, is denoted by [tex]{\displaystyle f^{-1}.}[/tex]
Here in the graph we can see that the option A has the clear range of the function.
[tex]2------- > 1\\4------- > 2\\6------- > 3\\8------- > 4[/tex]
Hence the option A is showing the domain ans the range of the function F(x) as inverse of F(x).
To know more about domain and range follow
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