In the function y+ 3 = (2x) + 1, what effect does the number 2 have on the graph, as compared to the graph of 1=1? 2 A. It shrinks the graph horizontally to 1/2 the original width B. It shrinks the graph vertically to 1/2 the original height. O C. It stretches the graph horizontally by a factor of 2. D. It stretches the graph vertically by a factor of 2