In a within-subjects study, eyewitness's memory accuracy was measured three times at 1-month intervals to see if there are significant changes in accuracy over time. The ANOVA output includes the following table, which shows that ____. Group of answer choices The individual differences in memory scores are significant. The memory scores are significantly different across the three time points. The groups of eyewitnesses differed in terms memory accuracy. The grand mean of memory scores is significantly different from 0