The linear parent function, f(x) = x was transformed to create a graph g(x) = f(x) - 1
Which statement about the graphs is true?

The graph of f is reflected over the y-axis to create the graph of g.

The graph of f is reflected over the x-axis to create the graph of g.

The graph of f is shifted 1 unit down to create the graph of g.

The graph of f is shifted 1 unit to the left to create the graph of g.