Please help! thank you :)

At May 1,2020 , Sunland Company had beginning inventory consisting of 210 units with a unit cost of $6.20. During May, the company purchased inventory as follows: 740 units at $6.20 550 units at $8.00 The company sold 980 units during the month for $12 per unit. Sunland uses the average-cost method. The average-cost per unit for May is $8.200. $6.860. $7.200. $6.200