Given the Following Information, What Would the Ending Inventory Value

Given the following information, what would the ending inventory value per unit be on April 30 under the weighted-average method in a perpetual inventory system? $$\begin{array} { | l | l | } \hline \text { Dates } & \text { Units of Inventory } \\\hline \text { Opening Inventory } & 200 \text { units at } \$ 5.00 \\\hline \text { Purchases: } & \\\hline \text { April } 12 & 300 \text { units at } \$ 5.10 \\\hline \text { July 7 } & 400 \text { units at } \$ 5.25 \\\hline \text { Sales: }& \\\hline \text { August } 12 & 100 \text { units at } \$ 8.00 \\\hline \text { December } 15 & 500 \text { units at } \$ 8.20 \\\hline\end{array}$$

A) $5.05
B) $5.06
C) $5.075
D) $5.15