The function g(x)= x is transformed to obtain function h. h(x) = g(x-3).
Which statement describes how the graph of his different from the graph of g?
A. The graph of h is the graph of g horizontally shifted right 3 units.
B. The graph of h is the graph of g vertically shifted up 3 units.
C. The graph of h is the graph of gvertically shifted down 3 units.
D. The graph of h is the graph of g horizontally shifted left 3 units.