A wildebeest is running in a straight line, which we shall call the x axis, with the positive direction to the right. The figure below shows this animal's velocity as a function of time. 16 Which of the following statements about the animal's motion must be true? 1. Its acceleration is increasing. 2. Its speed is decreasing from a to b and increasing from b to c. 3. It is moving to the right between a and b and to the left between b and c. 4. It is moving to the right between a and c. Which of the following statements about the animal's motion must be true? 1. Its acceleration is increasing. 2. Its speed is decreasing from a to b and increasing from b to c. 3. It is moving to the right between a and b and to the left between b and c. 4. It is moving to the right between a and c. Statement 2 and 3 Statement 1 and 4 Statement 1 Statement 4