For a science experiment a student is throwing a watermelon from a cliff The height of the watermelon can be modeled by the function h(t) = -4.9t^2+12t+150 where h(t) is measured in meters and t in seconds from the time it's thrown. What's the average rate of change during the time interval of 2 and 3.5 seconds after it's thrown A -15.0 B. 15.0 C. -0.07 D. 0.07