Answer:
The inventory method which results in the highest gross profit for June is FIFO
Explanation:
Month Units Cost U/cost LIFO E.INVEN. I.COST
jun-01 123 850 7 123 861 0
jun-10 164 1280 8 47 376 936
jun-15 164 1380 8 0 0 1312
jun-28 123 1080 9 0 0 1107
4590 170 1237 3355
FIFO E.INVEN. I.COST
7 0 0 861
8 0 0 1312
8 47 376 936
9 123 1107 0
170 1483 3109