The Following Data Applies to a Particular Item of Merchandise

The following data applies to a particular item of merchandise: $\begin{array}{lrr}\text { On hand at start of period } & 300 & \$ 5.10 \\1^{\text {st }} \text { purchase } & 500 & 5.20 \\2^{\text {ndd }} \text { purchase } & 700 & 5.30 \\3^{\text {rd }} \text { purchase } & 600 & 5.50\\\text { Number of units available for sale } & 2,100 \\\text { On hand at end of period } & \underline{500} \\\text { Number of units sold during period } & \underline{1,600}\end{array}$ ? Of the 1,600 units sold during the period, 300 were from the beginning inventory; 500 from the first purchase; 600 from the second purchase; and 200 from the last purchase. Using the weighted-average costing method and rounding the average unit cost to the nearest whole cent, the cost of goods sold would be

A) $11,140.
B) $11,130.
C) $8,480.
D) $8,410.