Marcor had the following inventory purchases during October 2022. Units Purchase Price/Unit At the end of October, a count revealed that 800 units remained in the warehouse. To speed things up, goods available for sale during October totaled $3,725. A. Calculate ending inventory and cost of goods sold using FIFO. B. Calculate ending inventory and cost of goods sold using LIFO. C. If average cost were used by Marcor, what would be the average cost per unit for October. (Just the cost per unit, not ending inventory or COGS.)