How does the graph of y = a(x – h)^2 + k change if the value of h is doubled?

a. The vertex of the graph moves to a point twice as far from the x-axis.

b. The vertex of the graph moves to a point twice as far from the y-axis.

c. The vertex of the graph moves to a point half as far from the x-axis.

d. The vertex of the graph moves to a point half as far from the y-axis