Ierenkoy Manufacturing Company uses perpetual Inventory method and FIFO. The purchases and issues (sent to production) of direct material inventory during December 2023 were as follows; As of December 1 , the beginning direct material inventory was 60 units purchased at 50 USD per unit. On December 5,150 units were purchased at 52 USD per unit. On December 15,180 units were sent to production. On December 18,100 units were purchased at 56 USD per unit. On December 31, 80 units were sent to production. What is the amount of total purchases during December 2023? D) None of these. E) 511,200