The function g(x) = x is transformed to obtain function h: h(x) = g(x + 7). Which statement describes how the graph of his different from the graph of g? O A. The graph of h is the graph of g horizontally shifted right 7 units. OB. The graph of h is the graph of g vertically shifted down 7 units. OC. The graph of his the graph of g vertically shifted up 7 units. OD. The graph of his the graph of g horizontally shifted left 7 units. ​