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.

C D F H

Explanation:

Class limits are values midway between the upper class boundary of a class and the lower class boundary of the next.  

To determine class limits, we require the span of data values that fall within a class.  

Class boundaries, however, are values halfway between the upper class limit of one class and the lower class limit of the next.

The A is unsaturated fat and B is saturated fat.

Saturated fatty acids are solid at room temperature. While unsaturated fatty acids are liquid at room temperature (due to the double bond) and this makes the molecule fragile, susceptible to contamination.

Consumed in excess, saturated fatty acids increase the synthesis of bad cholesterol, the risk of diabetes, hypertension and therefore cardiovascular problems.

To reduce the level of bad blood cholesterol, it is better to opt for unsaturated fatty acids, which are called "good" fats for cardiovascular health. But it is necessary in this case to avoid the saturated fatty acids (industrial).