please provide a step by step solutuion

Wan Tan Corp. made the following four inventory purchases in June:

June 1

150 units

$5.20

June 10

200 units

$5.85

June 15

200 units

$6.30

June 28

150 units

$6.60

On June 22, 450 units were sold. The company uses the perpetual inventory system and the weighted average to value the inventory. Calculate the cost of goods sold for the sale. Round to the nearest whole dollar.

Select one:

a.$2,628

b.$2,700

c.$2,580

d.$1,572