The function above represents the velocity of a race car as it travels a linear track. Negative velocities mean the car is backing up.
For each interval, enter all letters whose corresponding statements are true for that interval.
1. The interval from a to b
2. The interval from b to c
3. The interval from c to d
4. The interval from d to e
5. The interval from e to f

A. The car is moving forward on this interval
B. The car is backing up on this interval.
C. The forward velocity of the car is increasing on this interval.
D. The forward velocity of the car is decreasing on this interval.
E. The distance from the starting point is increasing on this interval.
F. The distance from the starting point is decreasing on this interval.