[单选题]
14.33: An object moves with constant acceleratio;bt5u/ u;fv5j- mo onon startings6cp+0 x/q u- vun6dxg with velocity and ending with a velocity of in a time of 3.00 s. For this motion, what is the average speed associated with the object?
A. 2.00 m/s
B. 2.17 m/s
C. 2.50 m/s
D. 2.83 m/s
E. 3.00 m/s