A researcher conducts an independent measure two factor study using a separate sample of n=15 participants in each treatment condition. The results are evaluated using an ANOVA and the researcher reports an F-ratio with df=1,84 for factor A and an F-ratio with df=2,84for factor B how many levels of factor A were used in the study? how many levels of factor B were used in the study? What are the df values for the F-ratio evaluating the interaction?