An Office Supply Company Is Attempting to Determine the Order

An office supply company is attempting to determine the order quantity for laser printer toner cartridges which are sold to local businesses. Annual demand is 20,000 units and each cartridge costs the store $25. It costs $30 to place an order and the inventory carrying cost rate is 25% of the value of the item. The following spreadsheet has been set up to solve the problem. What cell is the variable cell in this problem? $\begin{array}{|c|c|c|} \hline& \text { A } & \text { B } \\ \hline 1 & & \\\hline 2 & & \\\hline 3 & \text { Annual Demand: } & 20,000 \\\hline 4 & & \\\hline 5 & \text { Cost per Unit: } & \$ 25 \\\hline 6 & \text { Ordering Cost: } & \$ 30 \\\hline 7 & \text { Carrying Cost: } & 25 \% \\\hline 8 & & \\\hline 9 & \text { Order Quantity: } & 483.73 \\\hline 10 & & \\\hline 11 & \text { Total Cost: } & \$ 502,738.61 \\\hline\end{array}$

A) B3
B) B7
C) B9
D) B11