Martin Is Creating a Cross-Tabulation of Categorical Variables,and He Wants

Multiple Choice

Martin is creating a cross-tabulation of categorical variables,and he wants to compare groups to one another.He would like your advice on whether he should compare frequencies or percentages.You suggest that he compare

A) frequencies because it allows for clearer comparison of groups of each size.
B) frequencies because it allows for clear understanding of the size of each group.
C) percentages because it allows for clearer comparison of groups of each size.
D) percentages because it allows for clear understanding of the size of each group.