Which of the Following Correctly Describes the Wilcoxon Rank-Sum Test

Multiple Choice

Which of the following correctly describes the Wilcoxon rank-sum test?

A) It is a nonparametric test based on two independent simple random samples.
B) It is designed to determine whether the relative frequency distributions of two statistical populations of continuous values are identical to or different from one another.
C) It is equivalent to a parametric t-test of the difference between two means.
D) All of these.
E) None of these.