Which of the Following Best Describes When to Apply the Wilcoxon

Short Answer

Which of the following best describes when to apply the Wilcoxon rank sum test to determine whether the location of population 1 is different from the location of population 2? $\begin{array}{|l|l|}\hline A&\text {The samples must be drawn from normal populations. }\\\hline B&\text {The samples must be independent. }\\\hline C&\text {The samples must be drawn from matched pairs experiment. }\\\hline D&\text { The sample size must be larger than 30 .}\\\hline \end{array}$