A Row of a Stem-And-Leaf Chart Appears as Follows: 3

Multiple Choice

A row of a stem-and-leaf chart appears as follows: 3 | 0 1 3 5 7 9. Assume that the data is rounded to the nearest unit.

A) The frequency of the class is seven.
B) The minimum value in the class is 0.
C) The maximum value in the class could be 39.
D) The class interval is 5.