3. Harris is running a greens business providing organic spinach, kale and lettuce to specialty stores in the area. On October 1, he has 25 units in stock at a cost per unit of $2.25. On October 7, he purchases 25 more for $275 per unit on October 31, he purchases 30 more for $2.86 per unit. He sells nearly all of them, leaving only 5 in inventory. What is his COGS on a weighted average cost basis? O A $156.25 OBS19734 OC$210.50 OD. $199 25