Fingress 1630 Swifty's Place recorded the following data: Units Date Received Sold On Hand Unit Cost 650 1/1 Inventory 1/8 Purchase $2.50 980 1630 2.90 112 Sold 1190 440 The weighted average unit cost of the inventory at January 31 is: O $2.74 $ 2.64 O $3.30 $ 2.50