The function g(x)=x^2 is transformed to obtain function h: h(x)=g(x+7)

Which statement describes how the graph of h is different from the graph of g?

A) The graph of h is the graph of g vertically shifted down 7 units.

B) The graph of h is the graph of g horizontally shifted left 7 units.

C) The graph of h is the graph of g horizontally shifted right 7 units.

D) The graph of h is the graph of g vertically shifted up 7 units.