The following information was available from the inventory records of Swifty Corporation for January: Units Unit Cost Total Cost Balance at January 1 8,800 $9.75 $85,800 Purchases: January 6 5,800 10.21 59,218 January 26 8,100 10.67 86,427 Sales January 7 (7,600 ) January 31 (10,900 ) Balance at January 31 4,200

Assuming that Swifty uses a perpetual inventory system, what should be the inventory at January 31, using the LIFO method?

a) $42,820

b) $40,950

c) $41,210

d) $43,740

Using the FIFO Method?

a) $44,814

b) $43,114

c) $44,123

d) $45,108

Please answer both parts. I'm not sure how to solve.