HuCo begins operations in 20X4, uses the periodic method and makes the following merchandise purchases:

20X4Total units Unit costTotal cost

April 900$6$5,400

September 1,30079,100

20X5

March1,100 $8$8,800

November500105,000

HuCo, which uses weighted average costing, has 700 units in 20X4 ending inventory. IfHuCo sells 1,600 units in 20X5, what is its 20X5 cost of goods sold (round unit costs in the computation to the nearest penny)?

a) $13,800

b) $11,040

c) $11,760

d) $12,816