What is the difference between a class boundary and a class limit?

(Select all that apply.)
A. Class limits are possible data values.
B. Class boundaries are possible data values.
C. Class limits are values halfway between the upper class boundary of one class and the lower class boundary of the next.
D. Class limits specify the span of data values that fall within a class.
E. Class boundaries are not possible data values.
F. Class boundaries specify the span of data values that fall within a class.
G. Class limits are not possible data values.
H. Class boundaries are values halfway between the upper class limit of one class and the lower class limit of the next.