Which statement is true? A. On every interval of x-values, the average rate of change of g(x) exceeds the average rate of change of f(x). B. On every interval of x-values, the average rate of change of f(x) exceeds the average rate of change of g(x). C. As x increases, the rate of change of g(x) exceeds the rate of change of f(x). D. As x increases, the rate of change of f(x) exceeds the rate of change of g(x).