The graph shows the position x of a particle as a function x of time t. From point A to point E, which of the following choices is true about the particle's average velocity and average acceleration? O Avg. velocity > 0, avg. acceleration > O 0 Avg. velocity > 0, avg. acceleration = O E 0 Avg. velocity > 0, avg. acceleration O 0 Avg. velocity = 0, avg. acceleration = O O Avg. velocity = 0, avg. acceleration O 0 Avg. velocity