44 Consider a completely randomized design with five treatments:

A, B, C, D, and E. The ANOVA F -test revealed significant differences among the means. A multiple-comparison procedure was used to compare all possible pairs of treatment means at a = .05. The ranking of the five treatment means is summarized here. Identify which pairs of means are significantly different.

a. A C E B D

b. A C E B D

c. A C E B D

d. A C E B D