Question 5 of 12 -/1 E View Policies Current Attempt in Progress At May 1, 2017. Whispering Winds Corp. had beginning inventory consisting of 280 units with a unit cost of $6.0. During May, the company purchased inventory as follows: . - 550 units at $6.0 830 units at $7.0 The company sold 1380 units during the month for $11.0 per unit. Heineken uses the average cost method. The average cost per unit for May is O $7. O $6.60. O $6. O $6.50 Save for Later Attempts: 0 of 1 used Submit