Suppose There Is Interest in Comparing the Median Response Time $\chi$

Multiple Choice

Suppose there is interest in comparing the median response time for three independent groups learning a specific task.The appropriate nonparametric procedure is

A) Wilcoxon Rank Sums Test.
B) $\chi$ ² test for the different among more than two proportions.
C) Kruskal-Wallis Rank Test.
D) $\chi$ ² test for independence.