b. In cell B15, calculate the difference between cell B11 and B14. C. In the range B18:B21, use the COUNTIF function to count the number of records of the School field in the Survey table that equal Public, Private, Online, and Tutor. d. In the range B24:B27, use the COUNTIF function to count the number of records in the Prior Conferences field of the Survey table that equal 0, 1, 2, and 3+. e. In cells C14, C15, C18:C21, and C24:C27, divide the counts you calculated for each response group by the total number of responses shown in cell B11 to express the values as percentages (apply appropriate cell referencing)