4. Use this information for the month of June.

June 1 Beginning Inventory 10 units @ $120

5 Purchase 60 units @ $112

14 Sale 40 units

21 Purchase 30 units @ $116

30 Sale 28 units

Assuming that a periodic inventory system is used, what is cost of goods sold under the averagecost method?

a) $3,648

b) $7,752

c) $3,712

d) $7,888