Select the statement that explains one differences between the graphs of f(x)=5x^2 and g(x)=1/5x^2.

A. The graph of f(x) is wider than the graph of g(x).

B. The graph of f(x) is narrower than the graph of g(x).

C. The graphs open in opposite directions.

D. The y-coordinate of the vertex of f(x) is greater than the y-coordinate of the vertex of g(x).