Given the following data, calculate the Gross Profit for the 04/15 sale using the weighted average method 1/1 Beginning inventory 50 units at $10 per unit 3/5 Purchases 30 units at $14 per unit 4/15 Sale 20 units at $30 per unit 5/30 Purchases 25 units at $15 per unit 10/25 Purchases 20 units at $16 per unit 11/15 Sale 60 units at $32 per unit 12/31 Ending inventory 45 units Select one: O a. $370 $370 b. $280 O O O c. $230 d. $200