"Select the statement that explains one difference between the graphs of x=5x2 and g(x)=15x2g (x) = 15x2.

A. The graphs of f(x) is wider than the graph of g(x).
B. The graph of f of x , is wider than the graph of g of x.
C. The graph open in opposite Direction.
D. The y- coordinate of the vertex of f(x)is greater than the the y-coordinate of the vertex.