A company purchases inventory during the year in 4 batches, with unit and price amounts shown below Batch Units Price per Unit 3.600 $3.40 2 2,700 $3.60 2000 $3.70 4 1,500 $4.20 5,200 units were sold after Batch 2 was purchased, while 2,000 units were sold after Batch 3 was purchased