Davis Co$.$ had the following inventory activity during April:

Units Unit Cost

Beginning inventory $100$ $$8$

Purchase $($April $3)6012$

Sale $($April $10)80$

Purchase $($April $18)5015$

Purchase $($April $23)8018$

Sale $($April $28)100$

Assuming Davis uses a periodic LIFO cost flow assumption, ending inventory at April $30$ would be

a$.$ $$920.$

b$.$ $$880.$

c$.$ $$1,890.$

d$.$ $$1,090.$