Please show work

Lamp Inc. sells lamps. During March 2018, its inventory records for the category "Nightstand Lamps" were as follows: Quantity Price per Lamp Total Beginning Inventory 2,000 lamps $26 = $52,000 March 7 Purchase 1,800 lamps $29 = $52,200 March 11 Sale 2,500 lamps N/A March 17 Purchase 900 lamps $31 = $27,900 March 23 Sale 800 lamps N/A March 28 Purchase 700 lamps $32 = $22,400 Using the information above, perpetual FIFO cost of goods sold is: Select one: O a. $91,300 b. $89,700 V O c. $86,400 O d. $92,800