Which statement about function q is true? x q(x) 1 9 2 27 3 81 4 243 A. Function q is exponential because the rate of change is constant. B. Function q is linear because q(x) changes by a constant factor per unit interval. C. Function q is linear because the rate of change is constant. D. Function q is exponential because q(x) changes by a constant factor per unit interval.