Null hypothesis that all population means are equal

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You have 3 groups that you are trying to find if there is a difference in any of the population means. In each group there are 5 observations. The given level of significance is an alpha of .005. Your MSA is 6,000 and your MSW is 500. Will you reject your null hypothesis that all population means are equal or will you not reject? Choose the best answer from the options below.
A. The null hypothesis is proven true

B. You will not reject the null hypothesis

C. The critical value is 8.51

D. A and C

E. B and C

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