please explain which one is correct and explain why the other answers are incorrect

Jeremy randomly assigns 15 1002MSC students into 3 groups based on the type of drink students consume when studying (coffee, tea, and redbull). The 3 groups are of equal size (five students per group). Jeremy wants to investigate whether the type of drink consumed when studying effects the amount of material retained after each study session. After collecting his data, Jeremy enters it into SPSS and generates an ANOVA. He notes that his MS within groups is much larger than his MS between groups. This finding indicates that: There was more variability between subjects within the same group than there was between groups O Jeremy has incorrectly setup his experiment and should repeat it O There was more variability between groups than the expected amount O Jeremy has made an error in his calculations