A three factor experiment is run with Factor Axed, Factor B-fixed, and Factor C-xed. The 3-way interaction between factors A, B, and C was signicant but all three two-way interactions and all three main effects were not signicant. A. A comparison of the differences in the levels of Factor B can be done using Tukey's HSD on the means for the levels of Factor B averaged over the levels of Factors A and C. B. A comparison of the differences in the levels of Factor B can be done using Tukey's HSD on the means for the levels of Factor B computed separately at each combination of the levels of factors A and C. C. A comparison of the differences in the levels of Factor B can be clone using Tukey's HSD on the means for the levels of Factor B computed separately at each level of factor A. D. A comparison of the differences in the levels of Factor B can be clone using 'Ihkey's HSD on the means for the levels of Factor B computed separately at each level of factor C. E. none of the above