The graph of f(x) is shown below. If g(x) = 3(x + 2)2 - 3, which of the following statements is true? A. The axis of symmetry of f(x) is 2 units to the left of the axis of symmetry of g(x). B. The axis of symmetry of f(x) is 6 units to the right of the axis of symmetry of g(x). C. The axis of symmetry of f(x) is 6 units to the left of the axis of symmetry of g(x). D. The axis of symmetry of f(x) is 2 units to the right of the axis of symmetry of g(x).