Suppose f(x) = x^2 and g(x) =4x^2. Which statement best compares the graph of g(x) with the graph of f(x)? A. The graph of g(x) is the graph of f(x) horizontally stretched by a factor of 4.
B. The graph of g(x) is the graph of f(x) vertically compressed by a factor of 4.
C. The graph of g(x) is the graph of f(x) vertically stretched by a factor of 4.
D. The graph of g(x) is the graph of f(x) shifter 4 units left.