Please show your work, thanks

Given the following data, calculate the cost of goods sold for the 04/15 sale using the weighted- average method for a perpetual inventory system, rounding to the nearest dollar. (Do not round in the process of your calculations, only round your final answer.) 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 O A. $600 O B. $280 O C. $200 OD. $230