Which is one of the transformations applied to the graph of f(x) = x2 to change it into the graph of g(x) = 9x2 – 36x?
A
The graph of f(x) = x2 is widened.B
The graph of f(x) = x2 is shifted right 4 units.C
The graph of f(x) = x2 is shifted down 36 units.D
The graph of f(x) = x2 is reflected over the x-axis.