Given a text T, and several options, according to the question posed in the text T to choose the most appropriate option from the options as the answer, please directly output the most appropriate option, do not need to output the explanation.

In a frequency distribution, the absolute frequency measure:
Option A:represents the percentages of each unique value of the variable.
Option B:represents the actual number of observations counted for each unique valueof the variable.
Option C:allows for comparisons between datasets with different numbers of total observations.

Answer: B