A Chi-Square Test for Independence Is Appropriate For

A chi-square test for independence is appropriate for:

A) data from a single random sample where two variables are recorded on each sample.
B) data from samples from two or more populations where each sample is classified by values of a categorical variable.
C) data from a single random sample where three or more variables are recorded on each sample.
D) data from samples from two or more populations where each sample is classified by values of two categorical variables.