Required information [The following information applies to the questions displayed below.] Sandra's Purse Boutique has the following transactions related to its top-selling Gucci purse for the month of October. Sandra's Purse Boutique uses a periodic inventory system. Cost per Date Transactions Units Unit Total Cost October 1 Beginning inventory 6 $790 $ 4,740 October 4 Sale October 10 Purchase October 13 Sale October 20 October 28 Purchase Sale October 30 Purchase 453470 800 4,000 810 3,240 8 820 6,560 $18,540