please answer this question choose the right one

Chapter 4. Q8 Homework . Unanswered You are examining how much parents contribute to the cost of a student's education. You have 50 observations and you have summarized the average contribution with a Pivot Table looking at Home (3 rows) and Parental Education (4 columns). Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a You should look at the percent of the Row Total. b You should look at the percentage of the Column Total. C Your sample is too small for a table this large. d You should be looking at a Pivot Chart instead of a table