Bob conducts a study investigating how happiness improves health, Bob tests the effect of different 3-month interventions. A positive psychological intervention, mindfulness exercise intervention, and a no intervention control were carried out in three individual groups of healthy participants. After collecting participants' health data at the end of the 3 months, Bob ran a one-way ANOVA and found that the MS(model) in the ANOVA table was similar to MS(residual). Choose the most likely conclusion for this result: O a. Both active interventions had a better impact on participants' health than no intervention control O b. There are no differences across the three groups in participants' health O c. There is a significant effect for the mindfulness exercise intervention over the positive psychological intervention and no intervention O d. There is a significant effect for the positive psychological intervention over either the mindfulness exercise intervention or no intervention O e. There's a difference between the three types of the invention on participants' health data