Answer:
A) FIFO costing method
B) LIFO cost method
Step-by-step explanation:
Pinkie copy center income tax expense ending December 31
Average cost FIFO LIFO
Sales revenue 13860 13860 13860
Cost of goods sold 6300 6246 6363
Gross profit 7560 7614 7497
Operating expense 4000 4000 4000
Net income before tax 3560 3614 3497
Income tax expense 1424 1446 1399
Net income 2136 2168 2098