What is the effect on the graph of f(x) = x2 when it is transformed to h(x) = 1/8x^2 – 13 ? A. The graph of f(x) is vertically compressed by a factor of 8 and shifted 13 units to the right. B. The graph of f(x) is horizontally stretched by a factor of 8 and shifted 13 units to the right. C. The graph of f(x) is vertically compressed by a factor of 8 and shifted 13 units down. D. The graph of f(x) is horizontally compressed by a factor of 8 and shifted 13 units down.