Answer the questions about the function whose graph is shown above.
Enter the letters for the intervals which correspond to the statements below. The letters for each entry should be in alphabetical order with no spaces.
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 function is increasing on this interval.
B. The function is decreasing on this interval.
C. The slope of the function is increasing on this interval.
D. The slope of the function is decreasing on this interval.
E. The total (signed) area between the graph of the function and the x axis is increasing on this interval.
F. The total (signed) area between the graph of the function and the x axis is decreasing on this interval.