A researcher conducts a study where they find an interaction between student's class (class A, B and C) and whether they participate in music at school (yeso). To unpack this interaction, the researcher should: O a. Use z-score tests O b. Use simple effects analyses O c. Use an ANOVA O d. Use matched-subject testsWhat value could we put at 'X' in the table of mean scores so that we would be LEAST likely to observe an interaction. Hint it may help to quickly draw a plot with the points you have been given