Presented Below Is a Partially-Completed Income Statement for Waddy Corp

Presented below is a partially-completed income statement for Waddy Corp.for 2013.Determine the missing amounts for each letter.
$\begin{array}{ll}\text { Net sales }&\$& \mathbf{A} \\\text { Cost of goods sold: }\\\text { Beginninginventory } & \mathbf{B} \\\text { Net purchases } & 140,000 \\\text { Cost of goods available for sale } & 160,000 \\\text { Ending inventory } & \mathbf{C} \\\text { Cost of goods sold } & 125,000 \\\text { Grossprofit } & 75,000 \\\text { Selling, general \& administrative expenses } & \mathbf{D} \\\text { Operatingincome } & 10,000\end{array}$