Which of the following statements about blocks variation is false? a. It equals the sum of the squared deviations between each block sample mean and the grand mean. b. It measures the variation among block sample means, which is attributable not to chance to inherent differences among blocks of experimental units. c. In two-way ANOVA, it equals the blocks mean square. d. In three-way ANOVA, it equals the blocks sample mean. e. None of these.