The following regression output from Excel reflects an observational study predicting functional ability scores from age and dementia onset (yeso). What conclusion can be made about the "goodness" of fit for this model? SUMMARY OUTPUT Inear rogation prediding functional ability con Mutple ANOVA 31030 64 Intercept 15800 0 080 Are a. A significant amount of variance in functional ability is explained (F=5.847, p<.05 so it is a good model. b. the model only explains of variation in functional ability not o c. one predictor significant od. constant highly p e.>