Which Statistical Technique Is Appropriate When We Compare Two Populations

Which statistical technique is appropriate when we compare two populations of nominal data with exactly two categories? $\begin{array}{|l|l|}\hline \text { A. } & \text { The } z \text {-test of a population proportion. } \\\hline \text { B. } & \text { The } z \text {-test of the difference between two proportions. } \\\hline \text { C. } & \text { The chi-squared test of a contingency table. } \\\hline \text { D. } & \begin{array}{l}\text { The } z \text {-test of a population proportion and the } z \text {-test of the differ ence between two } \\\text { proportions. }\end{array} \\\hline \text { E. } & \begin{array}{l}\text { The } z \text {-test of the difference between two proportions and the chi-squared test of a } \\\text { contingency table. }\end{array} \\\hline\end{array}$