A Company Uses a Periodic Inventory System and Records Purchases

A company uses a periodic inventory system and records purchases using the net method. The following information applies to 2013, which was the first year of operations: $\begin{array} { | l | l | } \hline \text { Purchases, at invoice price } & \$ 135,000 \\\hline \text { Purchases returns, at invoice price } & 9,000 \\\hline \text { Ending inventory physical count, at net } &39,750 \\\hline \text { Inventory shortage, at net } & 1,800 \\\hline\end{array}$
Purchase terms were: 3/10/60. All discounts were taken except for those on the first $22,500 shipped. Cost of goods sold for 2013 was:

A) $86,250
B) $84,450
C) $82,470
D) $80,670