You are given 472 sales transactions for a day for an online retailer that sells books and DVDS. Build 4 PivotTahles showing the following: (a) total revenue by product (rows) and region (columns), show in whole dollars (e.g., $1,234) (h) for each region, what % of the revenues came from Books and what % of revenues came from DVD's (show in % with 1 decimal digit, e.g., 12.3%) (c) number of transactions by product and region ((1) % breakdown of count of book and DVD purchases in each region (for each region, show what % of the transactions for books and what % were for DVDS). (show in % with 1 decimal digit