For a twice-differentiable function \(f(x),\ f(\) is 5, f prime of 4 is 0 and f

double prime of 4 is -6. Which of the following is true of the graph of \(y=f(x)\) at the point (4, ?

W) There is a local minimum

X) There is a local maximum

Y) There is an inflection point

Z) The graph is concave up
X) THERE IS A LOCAL MAXIMUM