2) Listed below are grade averages for randomly selected students with three different categories of high-school background. At the 0.05 level of significance, test the claim that the three groups have the same median grade average. Find the test stat:

A) Test statistic: H = 4.9600.
B) Test statistic: H = 3.9600.
C) Test statistic: H = 12,997.76.
D) Test statistic: H = 2.9600.
E) Test statistic: H = 50.960.